14. Sigmund Freud
Father of the psychoanalysis can’t be anything other than atheist – right? Maybe not, but it’s true in Freud’s case. Born in 19th century Austrian Empire, Freud wasn’t only a notable neurologist, but an influential atheist at the same time. Among other things, he has said the following: “Religion is an illusion, and it derives its strength from the fact that it falls in with our instinctual desires.”