Charles Darwin about selection (“On The Origin of Species”, 1859) - Hence if man goes on selecting, and thus augmenting, any peculiarity, he will almost certainly modify unintentionally other parts of the structure, owing to the mysterious laws of correlation.
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Hence if man goes on selecting, and thus augmenting, any peculiarity, he will almost certainly modify unintentionally other parts of the structure, owing to the mysterious laws of correlation.
 Charles DarwinOn The Origin of Species (1859). copy citation

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