Sword of Honor by Evelyn Waugh

Dark Universe by Daniel F. Galouye

Red Strangers by Elspeth Huxley

Pluto’s Republic by Peter Medawar

Uncle Fred in the Springtime by P.G. Wodehouse

Why We Get Sick: The New Science of Darwinian Medicine by Randolph Nesse

The Origin of Species by Charles Darwin

The Story of Doctor Dolittle by Hugh Lofting

Attack of the Theocrats: How the Religious Right Harms Us All—and What We Can Do about It by Sean Faircloth

Why We Believe in God(s): A Concise Guide to the Science of Faith by J. Anderson Thomson

Why Evolution Is True by Jerry Coyne

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Related lists

Christopher Hitchens

Steven Pinker

Sam Harris

Daniel Dennett

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About:
Richard Dawkins, FRS FRSL is an English ethologist, evolutionary biologist, and author. He is an emeritus fellow of New College, Oxford, and was the University of Oxford's Professor for Public Understanding of Science from 1995 until 2008. Wikipedia

Sources:

• http://www.nytimes.com/2013/09/15/books/review/richard-dawkins-by-the-book.html
  https://www.goodreads.com/interviews/show/891.Richard_Dawkins
• https://theweek.com/articles/459238/richard-dawkins-5-favorite-books 
• http://www.thedailybeast.com/articles/2012/09/27/what-richard-dawkins-reads-jerry-coyne-helena-cronin-and-more.html​

Image Source: 

• www.CGPGrey.com / CC BY (https://creativecommons.org/licenses/by/2.0) (cover image)
• Mark Coggins / CC BY (https://creativecommons.org/licenses/by/2.0) (profile image)