"Human affairs are so obscure and various that nothing can be clearly known. This was the sound conclusion of the Academic sceptics, who were the least surly of philosophers."

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The difference between prose logic and poetic thought is simple. The logician uses words as a builder uses bricks, for the unemotional deadness of his academic prose; and is always coining newer, deader words with a natural preference for Greek formations. The poet avoids the entire vocabulary of logic unless for satiric purposes, and treats words as living creatures with a preference for those with long emotional histories dating from mediaeval times. Poetry at its purest is, indeed, a defiance of logic.

— Robert Graves