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Quote by Carl Sagan

“In the long run, the aggressive civilizations destroy themselves, almost always. It's their nature. They can't help it.”

Quote by Carl Sagan

Author

Carl Sagan was an American astronomer, cosmologist, author, and science communicator, born on November 9, 1934, in Brooklyn, New York. He is renowned for his profound research into the cosmos and his dedication to popularizing science. Sagan proposed numerous theories about the origin of the universe and life, and he made complex scientific knowledge accessible to the public with his unique perspective and clear, engaging writing style. more

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“In the vastness of the Cosmos there must be other civilizations far older and more advanced than ours.”

Civilization Cosmos Vastness

Author:Carl Sagan

“For all I know we may be visited by a different extraterrestrial civilization every second Tuesday, but there's no support for this appealing idea. The extraordinary claims are not supported by extraordinary evidence.”

Knows May Ideas Different Support Civilization Evidence Claims Extraordinary Tuesday Every Second Extraterrestrial

Author:Carl Sagan

“With insufficient data it is easy to go wrong.”

Easy Data Insufficient

Book:Cosmos

Source: Cosmos

“They (i. e., the Pythagoreans) did not advocate the free confrontation of conflicting points of view. Instead, like all orthodox religions, they practised a rigidity that prevented them from correcting their errors.”

Views Errors Point Of View Orthodox Confrontation Correcting Rigidity

Author:Carl Sagan

“The neurochemistry of the brain is astonishingly busy, the circuitry of a machine more wonderful than any devised by humans. But there is no evidence that its functioning is due to anything more than the 10(14) neural connections that build an elegant architecture of consciousness.”

Humans Brain Consciousness Wonderful Evidence Connections Machines Busy Dues Architecture Elegant

Author:Carl Sagan

“War is murder writ large.”

Author:Carl Sagan

“Skepticism is the chastity of the intellect, and it is shameful to surrender it too soon or to the first comer; there is nobility in preserving it coolly and proudly through long youth, until at last, in the ripeness of instinct and discretion, it can be safely exchanged for fidelity and happiness.”

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Book:The Works of George Santayana: Scepticism and animal faith. Some meanings of the word

Source: The Works of George Santayana: Scepticism and animal faith. Some meanings of the word

“We humans appear on the cosmic calendar so recently that our recorded history occupies only the last few seconds of the last minute of December 31st.”

Humans Lasts Minutes Seconds Cosmic December Calendars Last Minute

Author:Carl Sagan

“It took the Church until 1832 to remove Galileo 's work from its list of books which Catholics were forbidden to read at the risk of dire punishment of their immortal souls.”

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Book:Pale Blue Dot: A Vision of the Human Future in Space

Source: Pale Blue Dot: A Vision of the Human Future in Space

“There's a cool web of language winds us in, Retreat from too much joy or too much fear: We grow sea-green at last and coldly die In brininess and volubility.”

Lasts Joy Dies Language Grows Too Much Sea Wind Green Retreat

Author:Robert Graves