The World (n.) is not a material world, but a psychic world, which allows us to make only indirect and hypothetical inferences about the real nature of matter.
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The World (n.) is not as we see it, no more than people are as we imagine them to be.
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The World (n.) begins to exist when the individual discovers it.
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The World (n.) is impossible without consciousness for it exist as such only in so far as it is consciously reflected and considered by a psyche. Consciousness is a precondition of being.
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World (n.) simply could not exist without consciousness for the world exists for us only in so far as it is consciously reflected by a psyche.