From an interview with Brad Pitt posted at a German website:
BILD: Do you believe in God?
Brad Pitt (smiling): “No, no, no!”
BILD: Is your soul spiritual?
Brad Pitt: “No, no, no! I’m probably 20 per cent atheist and 80 per cent agnostic. I don’t think anyone really knows. You’ll either find out or not when you get there, until then there’s no point thinking about it.