“I think it is possible, and that is the most dramatic element in modern civilization, that a human truth is opposed to another human truth no less human, ideal against ideal, positive worth against worth no less positive, instead of the struggle being as we are so often told, one between noble truth and vile selfish error.”
R.U.R. supplement in The Saturday Review (1923)
Context: Be these people either Conservatives or Socialists, Yellows or Reds, the most important thing is — and that is the point I want to stress — that all of them are right in the plain and moral sense of the word... I ask whether it is not possible to see in the present social conflict of the world an analogous struggle between two, three, five equally serious verities and equally generous idealisms? I think it is possible, and that is the most dramatic element in modern civilization, that a human truth is opposed to another human truth no less human, ideal against ideal, positive worth against worth no less positive, instead of the struggle being as we are so often told, one between noble truth and vile selfish error.
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Karel Čapek 51
Czech writer 1890–1938Related quotes

“Art is not a study of positive reality, it is the seeking for ideal truth.”

“Art is not a study of positive reality, it is the seeking for ideal truth.”
L'art n'est pas une étude de la réalité positive; c'est une recherche de la vérité idéale.
La Mare au Diable, ch. 1 (1851); Frank Hunter Potter (trans.) The Haunted Pool (New York: Dodd, Mead, 1895) p. 15

The Evolution of Physics (1938) (co-written with Leopold Infeld) <!-- later published by Simon & Schuster (1967) -->
1930s
Context: Physical concepts are free creations of the human mind, and are not, however it may seem, uniquely determined by the external world. In our endeavor to understand reality we are somewhat like a man trying to understand the mechanism of a closed watch. He sees the face and the moving hands, even hears its ticking, but he has no way of opening the case. If he is ingenious he may form some picture of a mechanism which could be responsible for all the things he observes, but he may never be quite sure his picture is the only one which could explain his observations. He will never be able to compare his picture with the real mechanism and he cannot even imagine the possibility or the meaning of such a comparison. But he certainly believes that, as his knowledge increases, his picture of reality will become simpler and simpler and will explain a wider and wider range of his sensuous impressions. He may also believe in the existence of the ideal limit of knowledge and that it is approached by the human mind. He may call this ideal limit the objective truth.
Source: Contributions to the history and improvement of the german universities - A history of pedagogy; volume 4 (1855), p. 99

Variant: I’ve had enough of someone else’s propaganda… I’m for truth, no matter who tells it. I’m for justice, no matter who it is for or against. I’m a human being first and foremost, and as such I’m for whoever and whatever benefits humanity as a whole.
Source: The Autobiography of Malcolm X
Source: The Autobiography of Malcolm X (1965), p. 400
Context: I've had enough of someone else's propaganda. I'm for truth, no matter who tells it. I'm for justice, no matter who it's for or against. I'm a human being first and foremost, and as such I am for whoever and whatever benefits humanity as a whole.

Source: The Limits of Evolution, and Other Essays, Illustrating the Metaphysical Theory of Personal Ideaalism (1905), Human Immortality: its Positive Argument, p.309-10
What is a "theoretical physicist"? http://public.web.cern.ch/public/en/People/Theorists-en.html at CERN Public Web.