Showing posts with label quotes. Show all posts
Showing posts with label quotes. Show all posts

5 Amazing Quotes By Max Planck On Science

max planck quotes science physics

Max Planck [1858-1947] was a German physicist who discovered energy quanta and laid the foundations of quantum mechanics in 1900. This won him the Nobel Prize in physics in 1918.

Best known for Planck's constant, denoted by h, Planck was a devout man who believed that his work with subatomic particles revealed to him the deepest secret of the universe.

According to Max Planck, the very greatest scientists of all times - such as Kepler, Newton, Leibniz - were permeated by a most profound religious attitude.

Early life


Max Planck was the sixth child in a family of intellectuals. His teacher Hermann Muller recognized the young talent and taught Planck astronomy and mathematics early on, aged 12.

Planck was gifted when it came to music. He played piano, organ and cello, and composed songs of his own. However, instead of music he chose physics for a career.

max planck science

Planck's professor at University of Munich advised him not to study physics because in that field "almost everything is already discovered." Planck replied he just wanted to know more about the universe.

However, by discovering quantum theory Max Planck opened a whole new field of quantum mechanics which in turn gave rise to modern technology.

Quotes by Planck


1. Experiments are the only means of knowledge at our disposal. The rest is poetry, imagination.

2. Science cannot solve the ultimate mystery of nature. That is because, in the last analysis, we ourselves are part of nature and therefore part of the mystery that we are trying to solve.

3. We have no right to assume that any physical laws exist, or if they have existed up to now, that they will continue to exist in a similar manner in the future.

4. What we perceive as matter is merely the manifestation of a force that causes the subatomic particles to oscillate and holds them together in the tiniest solar system of the universe.

5. Over the entrance to the gates of the temple of science are written the words: Ye must have faith. It is a quality which the scientist cannot dispense with.

5 Motivational Quotes By Madame Curie

quotes by marie curie

Marie Curie (1867-1934) is the only person in history who has won two Nobel Prizes in two different sciences, physics and chemistry. Curie was prohibited from higher education in her native country Poland. She overcame all obstacles and became a leading figure in the academia.

Following are five inspiring quotes by Madame Curie:

Advice to her daughters

Life is not easy for any of us. But what of that? We must have perseverance and above all confidence in ourselves. We must believe that we are gifted for something, and that this thing, at whatever cost, must be attained.

To make a better world

You cannot hope to build a better world without improving the individuals. To that end each of us must work for his own improvement, and at the same time share a general responsibility for all humanity, our particular duty being to aid those to whom we think we can be most useful.

Science has great beauty

A scientist in his laboratory is not only a technician: he is also a child placed before natural phenomena which impress him like a fairy tale. We should not allow it to be believed that all scientific progress can be reduced to mechanisms, machines, gearings, even though such machinery also has its beauty.

The way to success

I was taught that the way of progress was neither swift nor easy.

Be humble

I have no dress except the one I wear every day. If you are going to be kind enough to give me one, please let it be practical and dark so that I can put it on afterwards to go to the laboratory.

Marie Curie got married to Pierre Curie, along with whom she won her first Nobel Prize in physics. The couple went on a bicycle tour of the French countryside for their honeymoon.

5 Quotes By CV Raman, India's Nobel Laureate

cv raman nobel prize indian scientist physics

CV Raman was an Indian physicist who won the Nobel Prize in 1930. His discovery of the "Raman Effect" has extensive use in chemistry to provide a structural fingerprint by which strange molecules can be identified. Raman used to say "Ask the right questions, and nature will open the doors to her secrets."

Raman was born into an orthodox South Indian Brahmin family but his interests in the sciences kept him away from religious or spiritual activities. Eventually he described himself as an agnostic. Following are some amazing quotes by the first Indian Nobel laureate in science, CV Raman:

1. There is no Heaven, no Swarga, no Hell, no rebirth, no reincarnation and no immortality. The only thing that is true is that a man is born, he lives and he dies. Therefore, he should live his life properly. (1934)

Many started referring to Raman as an atheist, which he denied.

2. If there is a God we must look for him in the Universe. If he is not there, he is not worth looking for. I am being looked upon in various quarters as an atheist, but I am not. The growing discoveries in the science of astronomy and physics seem to be further and further revelations of God. (1945)

3. In a conversation with Mahatma Gandhi, Raman said "Mahatma ji, religions cannot unite. Science offers the best opportunity for a complete fellowship. All men of Science are brothers."

Raman was also active politically. He was famous for being an advocate of women's rights.

4. I have a feeling that if the women of India take to science and interest themselves in the progress and advance of science as well, they will achieve what even men have failed to do. Women have one quality--the quality of devotion. It is one of the most important passports to success in science.

5. As a political activist, Raman said: It seems to me that the real danger before our country is the crushing down of individual freedom and initiative by the steamroller of government authority. Democracy without freedom for the individual is a sham and a delusion. (1954 interview)

You can judge that CV Raman was not only a pioneering scientist but also a great thinker whose thoughts were progressive and way ahead of the time. Raman was the first Indian to win Nobel Prize in science who contributed immensely to the idea of agnosticism.

5 Spiritual Quotes By Erwin Schrödinger

5 spiritual quotes by erwin schrodinger

Austrian physicist Erwin Schrödinger (1887-1961) is well known as one of the founders of quantum mechanics. Schrödinger's equation is to quantum physics what Newton's laws are to classical physics. For his pioneering work, Schrödinger won the Nobel Prize in 1933.

But there is more to Schrödinger than you know. In addition to contributions to physics, Schrödinger is equally famous for being closer to spirituality than any other contemporary scientist. He took particular inspiration from eastern philosophies, such as from India.

Following are five quotes by physicist Erwin Schrödinger on philosophy and spirituality that may be worth your time:

1. We do not belong to this material world that science constructs for us. We are not in it; we are outside. We are only spectators. The reason why we believe that we are in it, that we belong to the picture, is that our bodies are in the picture. Our bodies belong to it. Not only my own body, but those of my friends, also of my dog and cat and horse, and of all the other people and animals. And this is my only means of communicating with them.

2. The stages of human development are to strive for:
(a) Besitz [Possession]
(b) Wissen [Knowledge]
(c) Können [Ability]
(d) Sein [Being]

The goal of man is to preserve his Karma and to develop it further... when man dies his Karma lives and creates for itself another carrier. [from writings in 1918]


3. This life of yours which you are living is not merely a piece of this entire existence, but in a certain sense the whole. This, as we know, is what the Brahmins express in that sacred, mystic formula which is yet really so simple and so clear; tat tvam asi, this is you. Or, again, in such words as "I am in the east and the west, I am above and below, I am this entire world." [from My View of the World 1951]


4. I am born into an environment — I know not whence I came nor whither I go nor who I am. This is my situation as yours, every single one of you. That is why we are eager to find out about it as much as we can.

And that is science, learning, knowledge; it is the true source of every spiritual endeavor of man. We try to find out as much as we can about the spatial and temporal surroundings of the place in which we find ourselves put by birth…

Although Schrodinger rejected traditional religious beliefs - Jewish, Christian, and Islamic - but he loved to indulge in religious expressions and metaphors. Schrodinger, like Heisenberg was deeply inspired by Vedantic concepts that helped him cope with the absurdity of quantum mechanics.


5. I think that life may be the result of an accident, but I do not think that of consciousness. Consciousness cannot be accounted for in physical terms. For consciousness is absolutely fundamental. It cannot be accounted for in terms of anything else. (1931)

10 Albert Einstein Quotes To Inspire Students

albert einstein inspiring quotes for students

Albert Einstein was not only one of the greatest physicists of all time, but also famous for his words of wisdom. Students often approached Einstein with their problems and he would be more than willing to help.

The following are just a few of Einstein's wise sayings that will encourage and inspire you to be all that you can be.

1. Do not worry about your difficulties in Mathematics. I can assure you mine are still greater. (In a letter to high school student Barbara Lee Wilson in 1943).

2. I do not carry such information in my mind since it is readily available in books. (In response to not knowing the speed of sound).

Einstein also similarly said, "The value of a college education is not the learning of many facts but the training of the mind to think".

3. Life is like riding a bicycle. To keep your balance you must keep moving. Einstein wrote this gem of an advice in a letter to his son - Eduard, dated 5 February 1930.

4. If A is success in life, then A = x + y + z. Work is x, play is y and z is keeping your mouth shut. (Said to Samuel J Woolf in 1929).

5. Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world. (1929)

Einstein's imagination led him to discover new theories in physics. For example, once when he was sitting in his office, Einstein thought: If a person falls freely, he will not feel his own weight. This thought pushed Einstein to a new theory of gravitation.

6. Everyone sits in the prison of his own ideas; he must burst it open, and that in his youth, and so try to test his ideas on reality.

7. I have only two rules which I regard as principles of conduct. The first is: Have no rules. The second is: Be independent of the opinion of others. 1930

8. Never lose a holy curiosity. It is enough if one tries merely to comprehend a little bit of mystery each day. Don't stop to marvel.

9. Try not to become a man of success. Rather become a man of value.

10. I never think of the future. It comes soon enough.

Clearly, Nobel prize winning scientist Albert Einstein had a knack for solving problems - be it in physics or in life in general. He continues to inspire millions of people every day.

Five Quotes By Freeman Dyson On Religion

freeman dyson quotes science religion

Freeman Dyson (1923-2020) was no ordinary physicist. In a letter of recommendation to Robert Oppenheimer, Nobel laureate Hans Bethe wrote in praise of Dyson: "He is the best student I have ever had or observed."

Dyson was unusual in that he won the Templeton Prize in 2000, which is given annually in the field of spirituality, recognizing achievements at the intersection of science and religion. Dyson was pleasantly surprised by this honor.

Yes, Dyson was openly religious.

But his God was a kind of meta-scientific, collective consciousness. As someone who regarded the universe as a manifestation of God, Dyson said: The many accidents of physics and astronomy that have worked together to our benefit, it almost seems as if the Universe must in some sense have known that we were coming.

Dyson partially disagreed with fellow physicist Steven Weinberg's view that "with or without religion, good people can behave well and bad people can do evil; but for good people to do evil – that takes religion" and added: "For bad people to do good things – that also takes religion."


Following are 5 quotes by Freeman Dyson on science, religion and life:

1. Both as a scientist and as a religious person, I am accustomed to living with uncertainty. Science is exciting because it is full of unsolved mysteries, and religion is exciting for the same reason. The greatest unsolved mysteries are the mysteries of our existence as conscious beings in a small corner of a vast universe.

2. To talk about the end of science is just as foolish as to talk about the end of religion. Science and religion are both still close to their beginnings, with no ends in sight. Science and religion are both destined to grow and change in the millennia that lie ahead of us, perhaps solving some old mysteries, certainly discovering new mysteries of which we yet have no inkling.

3. Science and religion are two windows that people look through, trying to understand the big universe outside, trying to understand why we are here. The two windows give different views, but they look out at the same universe. Both views are one-sided, neither is complete.

science and religion quotes freeman dyson

4. Without discipline there can be no greatness. Without diversity there can be no freedom. Greatness for the enterprise, freedom for the individual — these are the two themes, contrasting but not incompatible, that make up the history of science and the history of religion.


5. Over periods of 10,000 years the distinctions between Western and Eastern and African cultures lose all meaning. Over a time span of 100,000 years we are all Africans. And over a time span of 300 million years we are all amphibians, waddling uncertainly out of dried-up ponds onto the alien and hostile land.

As a scientist, Dyson made several important contributions to the field of astrophysics that also bear his name, including concepts like Dyson tree and Dyson eternal intelligence, which find repetitive use in the realm of science fiction.

Dyson was Professor Emeritus in the Institute for Advanced Study in Princeton, remembered by friends and colleagues as shy and polite, with a refreshing view of the world. Physicist Geoffrey Ingram Taylor described Dyson as "the best mathematician in England."

Five Quotes By Stephen Hawking On Religion

stephen hawking quotes science and religion

Stephen Hawking was one of the most brilliant minds of the 20th century who made fundamental contributions to the theory of black holes. Hawking is well known to the general public by his record-breaking book A brief history of time, which sold over 25 million copies.

Hawking (1942–2018) was given just a few years to live in his twenties, as he was struck by the paralyzing motor neuron disease in 1963. Not only did he beat the odds, but also revolutionized physics for next half a century.

When Hawking ended his bestselling book with the sentence: If we discover the theory of everything... it would be the ultimate triumph of human reason, for then we would know the mind of God, he raised quite a few eyebrows. Hawking later explained that he had used the word "God" figuratively.

On numerous occasions, Hawking had commented that even if God were to be real, he would be bound by the rules of physics. Therefore, is the idea of an all powerful creator even necessary, Hawking wondered often.

For example, Hawking told New Scientist in 2007: (1) I'm not religious in the normal sense. I believe that the universe is governed by the laws of science. The laws may have been decreed by God, but God does not intervene to break the laws.

In 2011, Hawking would go on to say: (2) We are each free to believe what we want and it is my view that the simplest explanation is there is no God. There is probably no heaven, and no afterlife either. We have this one life to appreciate the grand design of the universe, and for that, I am extremely grateful.

And it is true that Hawking lived life to the fullest. His life threatening disease did not hinder his goals and aspirations. Hawking said, I believe that disabled people should concentrate on things that their handicap doesn’t prevent them from doing and not regret those they can’t do.

stephen hawking quotes science and religion

In an interview to The Guardian, Hawking remarked on the question of death: (3) I regard the brain as a computer which will stop working when its components fail. There is no heaven or afterlife for broken down computers. That is a fairy story for people afraid of the dark.

On the question of creation, Hawking is clear: (4) Because there is a law such as gravity, the universe can and will create itself from nothing. Spontaneous creation is the reason there is something rather than nothing, why the universe exists, why we exist. It is not necessary to invoke God to light the blue touch paper and set the universe going.

It may be a coincidence but Stephen Hawking was born on the same day that Galileo Galilei died in 1642. It was Galileo, the father of modern physics, who laid the foundations of science and religion debate, building upon his inner contradictions as a deeply religious man.

Hawking continued the great legacy more than 300 years later. According to him, there is a fundamental difference between religion, which is based on authority and science, which is based on observation and reason. This is also the view held by such greats as Dirac and Feynman

(5) We are just an advanced breed of monkeys—Hawking adds—on a minor planet of a very average star. We are so insignificant that I cannot believe the whole universe exists for our benefit (which is the view that religion has). But we can understand the Universe, and that makes us something very special.

10 Inspiring Quotes From Richard Feynman's Letters

quotes by richard feynman letters

Richard Feynman was a Nobel Prize winning American physicist whose letters have grabbed the attention of media far and wide. They included jokes, anecdotes, puzzles and news for his parents while he worked at institutions across America.

The following 10 quotes by Richard Feynman are extracted from the book titled, Don't you have time to think? edited by his daughter Michelle Feynman. The book, published in April 2005, is a unique collection of Feynman's letters.

1) Letter to mom Lucille Feynman, Oct 1939: Professor Wheeler was called away suddenly last night so I took over his course in mechanics for the day. I spent all last night preparing. It went very nicely and smoothly. It was a good experience - I guess someday I will do a lot of that.

Physicist John Wheeler was Feynman's doctoral advisor. This was probably Feynman's first lecture he gave in the absence of Prof Wheeler, as mentioned. He seems to have enjoyed teaching and wanted to share that feeling with his mother.

2) Tell pop I have made out a time schedule so as to efficiently distribute my time and will follow it quite closely. There are many hours when I haven't marked down just what to do but I do what I feel is most necessary then or what I am most interested in.

quotes by richard feynman letters

Like most students Feynman also struggled to manage time. At the time this was written Feynman was quite early in his twenties. As suggested by his father, Feynman made a time table to achieve maximum level of productivity in a day.

3) 1940: I am listening to a course in physiology, study of life processes, in the biology dept. It is a graduate course. I don't know at all as much as the 3 other fellows in the class but I can understand and follow everything easily.

Just like this, Feynman was led to new adventures in life by his curiosity. In a 1979 interview given to Omni magazine Feynman said: I don't know anything, but I do know that everything is interesting if you go into it deeply enough.

4) Letter to Arline, the love of his life, year 1945: I feel I am a reservoir for your strength. Without you, I would be empty and weak, like I was before I knew you... but your moments of strength make me strong and thus I am able to comfort you with your own strength when you are down.

5) Study hard what interests you the most in the most undisciplined, irreverent and original manner possible. Letter to J. M. Szabados (November 1965)

6) Letter to Koichi Mano, February 1966: You say you are a nameless man. You are not to your wife and to your child. You will not long remain so to your immediate colleagues if you can answer their simple questions when they come into your office.

You are not nameless to me. Do not remain nameless to yourself — it is too sad a way to be. Know your place in the world and evaluate yourself fairly, not in terms of the naïve ideals of your own youth, nor in terms of what you erroneously imagine your teacher's ideals are.

7) Do not read so much, look about you and think of what you see there. Letter to Ashok Arora, January 1967.

8) The real question of government versus private enterprise is argued on too philosophical and abstract a basis. Theoretically, planning may be good. But nobody has ever figured out the cause of government stupidity — and until they do (and find the cure), all ideal plans will fall into quicksand. 1963 letter to his wife, Gweneth.

9) Tell your son to stop trying to fill your head with science — for to fill your heart with love is enough! Note to the mother of Marcus Chown.

10) Last letter to Arline, written in 1946, after her untimely death due to prolonged tuberculosis: I adore you sweetheart. I find it hard to understand in my mind what it means to love you after you are dead. But I still want to comfort and take care of you — and I want you to love me and care for me.

I want to have problems to discuss with you — I want to do little projects with you. My darling wife, I do adore you. You, dead, are so much better than anyone else alive. I love my wife. My wife is dead. PS: Please excuse my not mailing this but I don't know your new address.

7 Funny Quotes By Physicist Wolfgang Pauli

quantum mechanics quotes wolfgang pauli physics quotes

Wolfgang Pauli was one of the greatest physicists of the 20th century who played critical role in the development of quantum mechanics. He won the Nobel Prize in 1945 after being nominated by Albert Einstein for the discovery of exclusion principle.

Pauli was infamous for his supposed tendency to cause equipment failure whenever he was around. Stories like, his new car failed during a honeymoon without apparent reason, and a cyclotron at Princeton University burnt in 1950 in his presence.


Once at a reception party, his colleagues decided to parody the Pauli effect by deliberately dropping a chandelier upon Pauli's entrance. But to everyone's surprise, the chandelier stuck instead, becoming yet another example of the Pauli effect.

Hence, Pauli was a really mysterious person whose proximity was disliked by experimental physicists. In this post, let us delve into interesting anecdotes and funny quotes of Austrian physicist Wolfgang Pauli, the most legendary scientist of the past century.

Prophet Dirac

In the 1927 Solvay conference, Paul Dirac said: If we are honest, and scientists have to be, we must admit that religion is a jumble of false assertions, with no basis in reality. The very idea of God is a product of the human imagination.

Wolfgang Pauli had kept silent. When asked for his opinion, Pauli jokingly replied: Our friend Dirac has a religion of his own and its guiding principle is, "There is no God and Dirac is His prophet." Everybody burst into laughter, including Dirac and Heisenberg.

paul dirac and wolfgang pauli physics
Dirac, Pauli

Elusive Neutrino

Pauli said in 1930: I have done a terrible thing. I have postulated a particle that cannot be detected. After proposing the existence of neutrino, an extremely light electrically neutral particle, that does not participate in the strong interaction and weak force is very short range, so it is very hard to find.

Trolling Heisenberg

Werner Heisenberg claimed to a journalist that Pauli and he had found a unified field theory, but just some technical details were missing. Pauli wrote in a letter, drawing a big rectangle, that "This is to show that I can paint like Titian. Only technical details are missing."

niels bohr werner heisenberg wolfgang pauli physics history quantum mechanics
Bohr, Heisenberg, Pauli

Parity violation

If a system behaves in the mirror image as it normally would, it is said to respect parity symmetry. In 1956, Chinese American physicist Chien-Shiung Wu discovered parity violation, leading Pauli to comment: "I cannot believe God is a weak left-hander!"

Bad science

Wolfgang Pauli was known for his colorful objections to careless thinking. When a colleague showed Pauli his paper, Pauli said after reading: This paper is not only not right; it is not even wrong. The phrase caught on to describe bad science or statements that don't satisfy falsifiability.

Why so serious?

Wolfgang Pauli recalled this incident. A person observed that Pauli was strolling aimlessly in the streets of Copenhagen, and said: You look very unhappy. Pauli replied seriously: How can one look happy when he is thinking about the anomalous Zeeman effect?

spectral line split zeeman effect wolfgang pauli physics

Pieter Zeeman discovered in 1896 the splitting of a spectral line into several components in the presence of a static magnetic field. For this discovery, he was awarded Nobel Prize in 1902.

On knowledge

Wolfgang Pauli was of the belief that there is no limit to knowledge. However, as one goes deeply into learning a subject, the ambiguity also increases, since every new answer might open the door to a hundred new questions.

Pauli said: "The best that most of us can hope to achieve in physics is simply to misunderstand at a deeper level." This means that at least we have reached a deeper level to be amazed and confused by the result, so it's worth something.

10 Albert Einstein Quotes To Succeed In Life

albert einstein quotes that will help you in life motivational

Apart from making groundbreaking discoveries in physics, Albert Einstein also played the role of a motivational guru quite often. So, following are 10 Einstein quotes that will change your life.

1. Everyone sits in the prison of his own ideas; he must burst it open, and that in his youth, and try to test his ideas on reality. [Meaning: Don't keep delaying what you really want to do. Try it out for who knows what is possible?]

2. Joy in looking and comprehending is nature's most beautiful gift. Never lose a holy curiosity for it has its own reason for existing. [Meaning: Every child is born curious. Keep your mind open to new adventures.]


3. Try to become not a man of success, but try rather to become a man of value. Because, only a life lived for others is a life worthwhile. [Meaning: Our relationships are just as important as goals.]

4. Life is like riding a bicycle. In order to keep your balance you must keep moving. [Meaning: Enjoy the ride. Don't be afraid to fall.]


5. Don't think about why you question, simply don't stop questioning. Don't worry about what you can't answer, and don't try to explain what you can't know. [Meaning: Curiosity is a quality one must never let go of. Ask questions as they will lead you to life's answers.]


6. Blind obedience to authority is the greatest enemy of truth. [Meaning: Don't follow people blindly.]


7. The value of a college education is not the learning of many facts but the training of the mind to think. [Meaning: Learn how to think, not what to think.]

8. I never think of the future. It comes soon enough. [Meaning: Live in the moment. Act now.]


9. The mediocre mind is incapable of understanding the man who refuses to bow blindly to conventional prejudices and chooses instead to express his opinions courageously and honestly. [Meaning: Break the mould you were born into.]


10. If A is success in life, then A = x + y + z. Work is x, play is y and z is keeping your mouth shut. [Meaning: Work hard. Play hard. Stay humble.]

10 Galileo Galilei Quotes To Succeed In Life

top 10 galileo quotes astronomy physics

Galileo played a major role in the scientific revolution during the Renaissance period. He was the first to discover the rings of Saturn. His work in physics helped Newton formulate the laws of motion. Here is a list of some of his finest sayings:

1. I do not feel obliged to believe that the same God who has endowed us with senses, reason, and intellect has intended us to forgo their use. (context: Galileo's trial by The Church)

2. The book of the universe is written in a mathematical language, without whose help it is impossible to comprehend a single word of it; without which one wanders in vain through a dark labyrinth.


3. The sun, with all those planets revolving around it and dependent on it, can still ripen a bunch of grapes as if it had nothing else in the universe to do.

4. My dear Kepler, what would you say of the learned here, who have steadfastly refused to cast a glance through the telescope? What shall we make of this? Shall we laugh, or shall we cry? (In a 1610 letter, Galileo's trial)

5. Nature is inexorable and immutable; she never transgresses the laws imposed upon her, or cares a whit whether her abstruse reasons and methods of operation are understandable to men.

6. In the long run my observations have convinced me that most men, reasoning preposterously, first establish some conclusion in their minds which, either because of its being their own or because of their having received it from some person who has their entire confidence, impresses them so deeply that one finds it impossible ever to get it out of their heads.


7. In questions of science the authority of a thousand is not worth the humble reasoning of a single individual.

8. I have been in my bed for five weeks, oppressed with weakness and other infirmities from which my age, seventy four years, permits me not to hope release. Added to this, the sight of my right eye — that eye whose labors (dare I say it) have had such glorious results — is for ever lost. That of the left, which was and is imperfect, is rendered null by continual weeping. [context: His house arrest after the trial; Galileo became partially blind by looking at the Sun through his telescope]

9. Light held together by moisture. (his description of wine)

10. You cannot teach a man anything, you can only help him to find it within himself.

10 Carl Sagan Quotes On Science And Life

Top 10 Relevant Carl Sagan Quotes To Modern Life

Carl Sagan was the man who brought astronomy into our living rooms with his masterpiece, Cosmos: A Personal Voyage, which was viewed by over 500 million people around the world!

As a scientist, he contributed enormously to our understanding of the solar system. He correctly predicted the existence of methane lakes on Saturn's largest moon, Titan. When other astronomers had imagined Venus to be a mild summery paradise, Carl showed it to be dry, thick and unpleasantly hot.


He also predicted life on Venus in 1967 and we may be close to proving him right. Not just it, Carl Sagan played a leading role in every major spacecraft mission to explore the solar system in the 20th century: Mariner, Viking, Voyager, you name it!

Although Carl died quite young (had he been alive, he'd be celebrating his 86th birthday in 2020), his ideas and thoughts will remain with us for-ever. Let us have a look at 10 Carl Sagan quotes which are relevant to modern times, shall we?

On climate change


goa protest environment climate change carl sagan quotes
Protest in Goa

Carl says: Our intelligence and our technology have given us the power to affect the climate. How will we use this power? Are we willing to tolerate ignorance and complacency in matters that affect the entire human family? Do we value short-term advantages above the welfare of the Earth? Or will we think on longer time scales, with concern for our children and our grandchildren, to understand and protect the complex life-support systems of our planet? The Earth is a tiny and fragile world. It needs to be cherished.

On life elsewhere


All my life, I've wondered about life beyond the earth. On those countless other planets that we think circle other suns, is there also life? Might the beings of other worlds resemble us, or would they be astonishingly different? What would they be made of? In the vast Milky Way galaxy, how common is what we call life? The nature of life on earth and the quest for life elsewhere are the two sides of the same question: the search for who we are.

On science and politics


We can’t just conclude that science puts too much power into the hands of morally feeble technologists or corrupt, power-crazed politicians and decide to get rid of it. Advances in medicine and agriculture have saved more lives than have been lost in all the wars in history. Advances in transportation, communication, and entertainment have transformed the world. The sword of science is double-edged.

Ten Greatest Carl Sagan Quotes Relevant To Modern Times

On afterlife

He says: I would love to believe that when I die I will live again, that some thinking, feeling, remembering part of me will continue. But much as I want to believe that, and despite the ancient and worldwide cultural traditions that assert an afterlife, I know of nothing to suggest that it is more than wishful thinking.


The world is so exquisite with so much love and moral depth, that there is no reason to deceive ourselves with pretty stories for which there's little good evidence. Far better it seems to me, in our vulnerability, is to look death in the eye and to be grateful every day for the brief but magnificent opportunity that life provides.

On cannabis


The cannabis experience has greatly improved my appreciation for art, a subject which I had never much appreciated before. The understanding of the intent of the artist which I can achieve when high sometimes carries over to when I'm down. This is one of many human frontiers which cannabis has helped me traverse. There also have been some art-related insights — I don't know whether they are true or false, but they were fun to formulate.

On experiment


Our perceptions may be distorted by training and prejudice or merely because of the limitations of our sense organs, which, of course, perceive directly but a small fraction of the phenomena of the world.

Even so straightforward a question as whether in the absence of friction a pound of lead falls faster than a gram of fluff was answered incorrectly by Aristotle and almost everyone else before the time of Galileo.

Science is based on experiment, on a willingness to challenge old dogma, on an openness to see the universe as it really is. Accordingly, science sometimes requires courage—at the very least the courage to question the conventional wisdom.

On god


The idea that a God or gods is necessary to effect one or more of these origins has been under repeated attack over the last few thousand years. Because we know something about phototropism and plant hormones, we can understand the opening of the morning glory independent of divine micro-intervention. It is the same for the entire skein of causality back to the origin of the universe. As we learn more and more about the universe, there seems less and less for God to do.

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On our place in the cosmos


We are the local embodiment of a Cosmos grown to self-awareness. We have begun to contemplate our origins: starstuff pondering the stars; organized assemblages of ten billion billion billion atoms considering the evolution of atoms; tracing the long journey by which, here at least, consciousness arose. Our loyalties are to the species and the planet. We speak for Earth. Our obligation to survive is owed not just to ourselves but also to that Cosmos, ancient and vast, from which we spring.

On the future

I worry that, especially as the Millennium edges nearer, pseudo-science and superstition will seem year by year more tempting, the siren song of unreason more sonorous and attractive. Where have we heard it before? Whenever our ethnic or national prejudices are aroused, in times of scarcity, during challenges to national self-esteem or nerve, when we agonize about our diminished cosmic place and purpose, or when fanaticism is bubbling up around us-then, habits of thought familiar from ages past reach for the controls. The candle flame gutters. Its little pool of light trembles. Darkness gathers. The demons begin to stir.

On books


The whole idea of what happens when you read a book, I find absolutely stunning. Here's some product of a tree, little black squiggles on it, you open it up, an inside your head is the voice of someone speaking, who may have been dead 3000 years, and there he is talking directly to you, what a magical thing that is.
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