"There are two contrary impulses which govern this man's brain-the one sane, and the other eccentric. They alternate at regular intervals."

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The belief that the animals exist because God created them - and that he created them so we can better meet our needs - is contrary to our scientific understanding of evolution and, of course, to the fossil record, which shows the existence of non-human primates and other animals millions of years before there were any human beings at all.

— Peter Singer