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Logic is a law which must be obeyed, and man realizes himself only in so far as he is logical. He finds himself in cognition.

— Otto Weininger Sex and Character (1906)

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More quotes by Otto Weininger

If man were not free, then he could not conceive of causality at all, and could not form any concept of it. Insight into lawfulness is already freedom from it.

Memory, then, is a necessary part of the logical faculty. … The proposition A = A must have a psychological relation to time, otherwise it would be At1 = At2.

Sex and Character (1903)

Woman, in short, has an unconscious life, man a conscious life, and the genius the most conscious life.

Sex and Character (1903)

Not only virtue, but also insight, not only sanctity but also wisdom, are the duties and tasks of mankind.

Sex and Character (1903)

The deepest, the intelligible, part of the nature of man is that part which does not take refuge in causality, but which chooses in freedom the good or the bad.

Sex and Character (1903)

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The most merciful thing in the world, I think, is the inability of the human mind to correlate all its contents.

H. P. Lovecraft The Call of Cthulhu (1926)

Anyone who believes exponential growth can go on forever in a finite world is either a madman or an economist.

Kenneth Boulding to Kenneth Boulding in: United States. Congress. House (1973)

The greater part of humanity is too much harassed and fatigued by the struggle with want, to rally itself for a new and sterner struggle with error.

Friedrich Schiller On the Aesthetic Education of Man (1794)

The reasonable man adapts himself to the world: the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.

George Bernard Shaw Maxims for Revolutionists (1903)

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Quote text and notes from Wikiquote: Otto Weininger (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.