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Behavior evolves through natural selection, just as anatomy does. Hence if sex is enjoyable, natural selection must have been responsible for that outcome.

— Jared Diamond Why Is Sex Fun?: The Evolution of Human Sexuality (1997)

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More quotes by Jared Diamond

History, as well as life itself, is complicated; neither life nor history is an enterprise for those who seek simplicity and consistency.

Collapse: How Societies Choose to Fail or Succeed (2005)

My hope in writing this book has been that enough people will choose to profit from that opportunity to make a difference.

Collapse: How Societies Choose to Fail or Succeed (2005)

Our sex is ultimately laid down by our genes.

Why Is Sex Fun?: The Evolution of Human Sexuality (1997)

Remember that impact is the product of two factors: population multiplied times impact per person.

Collapse: How Societies Choose to Fail or Succeed (2005)

Put another way, the chimpanzees' closest relative is not the gorilla but humans.

The Third Chimpanzee: The Evolution and Future of the Human Animal (1991)

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Attribution

Quote text and notes from Wikiquote: Jared Diamond (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.