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Friedrich Nietzsche, om föreställningen om fri vilja, i Beyond Good and Evil:

The causa sui is the best self-contradiction that has been conceived so far. It is a sort of rape and perversion of logic. But the extravagant pride of man has managed to entangle itself profoundly and frightfully with just this nonsense. The desire for “freedom of the will” in the superlative metaphysical sense, which still holds sway, unfortunately, in the minds of the half-educated; the desire to bear the entire and ultimate responsibility for one’s actions oneself, and to absolve God, the world, ancestors, chance, and society involves nothing less than to be precisely this causa sui and, with more than Baron Münchhausen’s audacity, to pull oneself up into existence by the hair, out of the swamps of nothingness.

Citatet återfinns i Galen Strawsons utmärkta essä om fri vilja, ”Your Move: The Maze of Free Will”, som rekommenderas för den som vill fördjupa sig ytterligare i ämnet.