Carl Sagan quotes

Carl Sagan
Carl Sagan

Carl Edward Sagan (9 November 1934 – 20 December 1996) was an American astronomer astronomer, cosmologist, astrophysicist, astrobiologist, author, science popularizer, and science communicator in astronomy and other natural sciences and popular science writer. He published more than 600 scientific papers and articles and was author, co-author or editor of more than 20 books. Sagan is known for many of his popular science books.

Carl Sagan quotes
Carl Sagan quotes

“Somewhere, something incredible is waiting to be known.”

“Every one of us is, in the cosmic perspective, precious. If a human disagrees with you, let him live. In a hundred billion galaxies, you will not find another.”

“Science is not only compatible with spirituality; it is a profound source of spirituality.”

“The sky calls to us. If we do not destroy ourselves, we will one day venture to the stars.”

“Imagination will often carry us to worlds that never were, but without it we go nowhere.”

“We make our world significant by the courage of our questions and by the depth of our answers.”

“The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff.”

“Extraordinary claims require extraordinary evidence.”

Carl Sagan quotes
Carl Sagan quotes

“One glance at a book and you hear the voice of another person, perhaps someone dead for 1,000 years. To read is to voyage through time.”

“If you wish to make an apple pie from scratch, you must first invent the universe.”

“History is full of people who out of fear or ignorance or the lust for power have destroyed treasures of immeasurable value which truly belong to all of us. We must not let it happen again.”

“Matter is composed chiefly of nothing.”

“Who is more humble? The scientist who looks at the universe with an open mind and accepts whatever the universe has to teach us, or somebody who says everything in this book must be considered the literal truth and never mind the fallibility of all the human beings involved?”

“For me, it is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring.”

“Nobody listens to mathematicians. ”

“The fact that some geniuses were laughed at does not imply that all who are laughed at are geniuses. They laughed at Columbus, they laughed at Fulton, they laughed at the Wright brothers. But they also laughed at Bozo the Clown.”

“For small creatures such as we the vastness is bearable only through love.”

“We are a way for the cosmos to know itself.”

“The universe is a pretty big place. If it’s just us, seems like an awful waste of space.”

“It pays to keep an open mind, but not so open your brains fall out.”

“The absence of evidence is not the evidence of absence.”

“Science is a way of thinking much more than it is a body of knowledge.”

“We wish to pursue the truth no matter where it leads. But to find the truth, we need imagination and skepticism both.”

There are many hypotheses in science that are wrong. That’s perfectly alright; it’s the aperture to finding out what’s right. Science is a self-correcting process. To be accepted, new ideas must survive the most rigorous standards of evidence and scrutiny.

“War is murder writ large.”

“I would love to believe that when I die I will live again, that some thinking, feeling, remembering part of me will continue. But as 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.”

“We are like butterflies who flutter for a day and think it is forever.”

“You’re an interesting species. An interesting mix. You’re capable of such beautiful dreams, and such horrible nightmares. You feel so lost, so cut off, so alone, only you’re not. See, in all our searching, the only thing we’ve found that makes the emptiness bearable, is each other.”

“The nuclear arms race is like two sworn enemies standing waist deep in gasoline, one with three matches, the other with five.”

“Extinction is the rule. Survival is the exception.”

“Look, all I’m asking is for you to just have the tiniest bit of vision. You know, to just sit back for one minute and look at the big picture…”

“Superstition is marked not by its pretension to a body of knowledge but by its method of seeking truth.”

“Science is, at least in part, informed worship.”

Issac Newton quotes

Isaac Newton
Isaac Newton by Godfrey Kneller

Sir Isaac Newton (January 4, 1643 – March 31 1727) was an English physicist, mathematician, astronomer, alchemist, inventor, theologian and natural philosopher. He is widely recognized as one of the most influential scientists of all time and as a key figure in the scientific revolution. Issac Newton is most famous for discovering the Laws of Gravity. Below is a collection of quotes by Sir Issac Newton.

Issac Newton quotes
Issac Newton quotes

“If I have seen further it is by standing on the shoulders of Giants.”

“Plato is my friend — Aristotle is my friend — but my greatest friend is truth.”

“Truth is ever to be found in simplicity, and not in the multiplicity and confusion of things.”

“I do not know what I may appear to the world, but to myself I seem to have been only like a boy playing on the sea-shore, and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary, whilst the great ocean of truth lay all undiscovered before me.”

“God created everything by number, weight and measure.”

“What is there in places empty of matter?”

“Men build too many walls and not enough bridges.”

Isaac Newton quotes
Isaac Newton quotes

“What we know is a drop, what we don’t know is an ocean.”

“The errors are not in the art, but in the artificers.”

“The main Business of natural Philosophy is to argue from Phenomena without feigning Hypotheses, and to deduce Causes from Effects, till we come to the very first Cause, which certainly is not mechanical.”

“If I have ever made any valuable discoveries, it has been due more to patient attention, than to any other talent.”

“Religion is partly fundamental & immutable partly circumstantial & mutable.”

“To explain all nature is too difficult a task for any one man or even for any one age…”

“Righteousness is the religion of the kingdom of heaven & even the property of God himself towards man. Righteousness & Love are inseparable for he that loveth another hath fulfilled the law.”

Plato quotes


Plato was a philosopher and mathematician, in Classical Greece, and an influential figure in western philosophy. He was Socrates student, and founded the first institution of higher learning in the Western world in Athens. Along with Socrates and student, Aristotle, Plato helped to lay the foundations of Western philosophy and science.

Plato is is one of the worlds most famous and widely read philosopher.

Plato quotes
Plato quotes

“The beginning is the most important part of the work.”

“Until philosophers are kings, or the kings and princes of this world have the spirit and power of philosophy, and political greatness and wisdom meet in one, and those commoner natures who pursue either to the exclusion of the other are compelled to stand aside, cities will never have rest from their evils…”

“Be kind, for everyone you meet is fighting a harder battle.”

“I am the wisest man alive, for I know one thing, and that is that I know nothing.”

“Wise men speak because they have something to say; fools because they have to say something.”

“Never discourage anyone…who continually makes progress, no matter how slow.”

“Music gives a soul to the universe, wings to the mind, flight to the imagination
and life to everything.”

Plato quotes
Plato quotes

“The heaviest penalty for declining to rule is to be ruled by someone inferior to yourself.”

“Let every man remind their descendants that they also are soldiers who must not desert the ranks of their ancestors, or from cowardice fall behind.”

“Do not train a child to learn by force or harshness; but direct them to it by what amuses their minds, so that you may be better able to discover with accuracy the peculiar bent of the genius of each.”

“The price good men pay for indifference to public affairs is to be ruled by evil men.”

“We can easily forgive a child who is afraid of the dark; the real tragedy of life is when men are afraid of the light.”

“The gods are not magicians who transform themselves; neither do they deceive mankind in any way.”

“Beauty of style and harmony and grace and good rhythm depend on simplicity.”

“Democracy, which is a charming form of government, full of variety and disorder, and dispensing a sort of equality to equals and unequals alike.”

“No human thing is of serious importance. ”

“Death is not the worst that can happen to men.”

“Ignorance, the root and stem of every evil.”

“Necessity is the mother of invention.”

“If women are expected to do the same work as men, we must teach them the same things.”

“Those who tell the stories rule society.”

“The first and best victory is to conquer self”

“The measure of a man is what he does with power.”

“You should not honor men more than truth.”

“Character is simply habit long continued.”

“The object of education is to teach us to love what is beautiful.”

“No wealth can ever make a bad man at peace with himself”

“How could they see anything but the shadows if they were never allowed to move their heads?”

“Excellence” is not a gift, but a skill that takes practice.
We do not act “rightly” because we are “excellent”,
in fact we achieve “excellence” by acting “rightly”.”

“Good actions give strength to ourselves and inspire good actions in others. ”

“Bodily exercise, when compulsory, does no harm to the body; but knowledge which is acquired under compulsion obtains no hold on the mind.”

“I thought to myself: I am wiser than this man; neither of us probably knows anything that is really good, but he thinks he has knowledge, when he has not, while I, having no knowledge, do not think I have.”

“Beauty of style and harmony and grace and good rhythm depend on simplicity”

“The direction in which education starts a man will determine his future life”

“Only a philosopher’s mind grows wings, since its memory always keeps it as close as possible to those realities by being close to which the gods are divine.”