" To tell you the truth: I don’t believe in God. I’m an atheist.” “You’re an atheist?” “That’s right!” “Well, are you absolutely sure there is no God?” I asked him. He paused, and said, “Well, no, I’m not absolutely sure. I guess it’s possible there might be a God.” “So you’re not really an atheist, then—you’re an agnostic,” I informed him, “because an atheist says, ‘I know there is no God,’ and an agnostic says ‘I don’t know whether there is a God. "

― , I Don't Have Enough Faith to Be an Atheist