Atheist Mind, Humanist Heart: Rewriting the Ten Commandments for the Twenty-first Century is a 2014 book by Lex Bayer and Humanist Chaplain, John Figdor, that has been described as a manual for working out one’s own epistemological and secular ethical beliefs. The book sets out to address what the authors see as a need among a growing number of Americans to talk about their beliefs, and lead happy and moral lives when they don't believe in gods or aren't comfortable with religion. It offers a clear set of constructive, positive principles to live by for agnostics, atheists, humanists and non-religious.