There are two kinds of atheists. There is the atheist who asks himself questions, and the atheist who wants to sin.
The atheist who asks himself questions is opened telling to him. Maybe he is the Christ without knowing it. Indeed, an atheist seeking truth wants, sometimes, to become the Christ without realizing it. You may be surprised with his belief, which may be beyond yours.
The atheist who wants to sin also asks questions. So, it’s about finding your sin by asking questions. Being smart is very interesting in this case. You can also be a psychologist. Humor and learning to learn make you a psychologist.
Talk to an atheist friend to browse his belief.