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Quote by John F. Kennedy

“Truth is a tyrant-the only tyrant to whom we can give our allegiance. The service of truth is a matter of heroism.”

Quote by John F. Kennedy

Author

John F. Kennedy

John F. Kennedy was the 35th President of the United States, serving from 1961 to 1963. His presidency was marked by the Civil Rights Act, the New Frontier policy, and the intense Cold War confrontation with the Soviet Union. Kennedy was known for his youthful charm and charisma, but his assassination during his term shocked the world. more

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Book:The Prose Works of John Milton

Source: The Prose Works of John Milton

“Truth is something that we can attempt to doubt, and then perhaps, after much exertion, discover that part of the doubt is not justified.”

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Author:Niels Bohr

“An ingenious compound of desirability and appearance. Discovery of truth is the sole purpose of philosophy, which is the most ancient occupation of the human mind and has a fair prospect of existing with increasing activity to the end of time.”

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“Truths are known to us in two ways: some are known directly, and of themselves; some through the medium of other truths. The former are the subject of Intuition, or Consciousness; the latter, of Inference; the latter of Inference. The truths known by Intuition are the original premisses, from which all others are inferred.”

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Book:The Collected Works of John Stuart Mill

Source: The Collected Works of John Stuart Mill

“Two truths cannot contradict one another.”

Book:Galileo on the World Systems: A New Abridged Translation and Guide

Source: Galileo on the World Systems: A New Abridged Translation and Guide

“We do not know a truth without knowing its cause.”

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“We know the truth not only through our reason but also through our heart. It is through the latter that we know first principles, and reason, which has nothing to do with it, tries in vain to refute them.”

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Book:Pascal Pensées

Source: Pascal Pensées

“Wherever modern Science has exploded a superstitious fable or even a picturesque error, she has replaced it with a grander and even more poetical truth.”

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Book:So Great a Vision: The Conservation Writings of George Perkins Marsh

Source: So Great a Vision: The Conservation Writings of George Perkins Marsh

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Book:Tragic Sense of Life

Source: Tragic Sense of Life

“You may object that by speaking of simplicity and beauty I am introducing aesthetic criteria of truth, and I frankly admit that I am strongly attracted by the simplicity and beauty of mathematical schemes which nature presents us. You must have felt this too: the almost frightening simplicity and wholeness of the relationship, which nature suddenly spreads out before us.”

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Author:Werner Heisenberg