Matthew Kneale. An Atheist's History of Belief: Understanding Our Most Extraordinary Invention. Bodley Head, 2013.

Christopher Cameron. Black Freethinkers: A History of African American Secularism. Northwestern University Press, 2019.

Susan Jacoby. Freethinkers: A History of American Secularism. Metropolitan Books, 2004.

Jonathan Israel. Radical Enlightenment: Philosophy and the Making of Modernity 1650–1750. Oxford University Press, 2001.

Catherine Nixey. The Darkening Age: The Christian Destruction of the Classical World. Houghton Mifflin Harcourt, 2017.

Alec Ryrie. Unbelievers: An Emotional History of Doubt. Harvard University Press, 2019.