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The unleashed power of the atom has changed everything save our modes of thinking and we thus drift toward unparalleled catastrophe.
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Besides agreeing with the aims of vegetarianism for aesthetic and moral reasons, it is my view that a vegetarian manner of living by its purely physical effect on the human temperament would most beneficially influence the lot of mankind.
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The more one chases the quanta, the better they hide themselves.
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I received your letter of June 10th. I have never talked to a Jesuit priest in my life and I am astonished by the audacity to tell such lies about me. From the viewpoint of a Jesuit priest I am, of course, and have always been an atheist.
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Lasting harmony with a woman was an undertaking in which I twice failed rather disgracefully.
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My scientific work is motivated by an irresistible longing to understand the secrets of nature and by no other feeling. My love for justice and striving to contribute towards the improvement of human conditions are quite independent from my scientific interests.
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The individual must not merely wait and criticize, he must defend the cause the best he can. The fate of the world will be such as the world deserves.
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If I would be a young man again and had to decide how to make my living, I would not try to become a scientist or scholar or teacher. I would rather choose to be a plumber or a peddler in the hope to find that modest degree of independence still available under present circumstances.
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Some men spend a lifetime in an attempt to comprehend the complexities of women. Others pre-occupy themselves with somewhat simpler tasks, such as understanding the theory of relativity!
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Love is a better teacher than duty.
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I am neither a German citizen, nor do I believe in anything that can be described as a 'Jewish faith.' But I am a Jew and glad to belong to the Jewish people, though I do not regard it in any way as chosen.
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In matters concerning truth and justice there can be no distinction between big problems and small; for the general principles which determine the conduct of men are indivisible. Whoever is careless with truth in small matters cannot be trusted in important affairs.
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The contemplation of this world beckoned as a liberation. The road to this paradise was not as comfortable and alluring as the road to the religious paradise; but it has shown itself reliable, and I have never regretted having chosen it.
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There comes a time when the mind takes a higher plane of knowledge but can never prove how it got there.
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My comprehension of God comes from a deeply felt conviction of a superior intelligence that reveals itself in the knowable world.
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The bigotry of the nonbeliever is for me nearly as funny as the bigotry of the believer.
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Freud's sense of reality is less clouded by wishful thinking than is the case with other people and he combines the qualities of critical judgment, earnestness and responsibility.
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Fundamental ideas play the most essential role in forming a physical theory. Books on physics are full of complicated mathematical formulae. But thought and ideas, not formulae, are the beginning of every physical theory. The ideas must later take the mathematical form of a quantitative theory, to make possible the comparison with experiment.
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There is, fortunately, a minority composed of those who recognize early in their lives that the most beautiful and satisfying experiences open to humankind are not derived from the outside, but are bound up with the development of the individual's own feeling, thinking and acting. The genuine artists, investigators and thinkers have always been persons of this kind. However inconspicuously the life of these individuals runs its course, none the less the fruits of their endeavors are the most valuable contributions which one generation can make to its successors.
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It gives me great pleasure, indeed, to see the stubbornness of an incorrigible nonconformist warmly acclaimed.
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Only a very dull man spells a word the same way twice.
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I never failed in mathematics. Before I was fifteen I had mastered differential and integral calculus.
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One strength of the communist system of the East is that it has some of the character of a religion and inspires the emotions of a religion. Unless the concept of peace based on law gathers behind it the force and zeal of a religion, it can hardly hope to succeed.
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Belief in an external world independent of the perceiving subject is the basis of all natural science.