Beauty (n.) is a free play of imagination and understanding in a purposiveness without purpose or a finality without end.
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Beauty (n.) reveals symmetry and unity of structure, as if it had been designed by intelligence.
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Beauty (n.) produces no knowledge itself, but it keeps the cognitive machinery entertained and so helps knowledge get made.
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Beauty (n.) is judged without any rule: no one reasons 'all roses are beautiful, this is a rose, hence it is beautiful.'
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Beauty (n.) of nature is proof that man is made for this world and fits into it.