This is pure rationalism.

Socrates was dying, and somebody asked, ”Are you not afraid, Socrates?” He said, ”Why should I be afraid, because I don’t know what is going to happen? First thing, maybe atheists are right.”
Listen.
He says, ”Maybe, perhaps, atheists are right and I will simply disappear. Then there is nobody left, so why fear? For whom to fear? There cannot be any anguish for me, because I will not be there. If atheists are right, then I will not be, and when I am not, fear cannot exist. I will not be tortured. Or maybe theists are right and I may continue, and if I continue, then why fear? I will be there. So I will see what happens, but I have not died yet. Wait, let me die. Only then will I know whether I survive or not.”
This is pure rationalism. A rationalist cannot assert such things, that ”I don’t believe in a soul.”