The assumption that nature is all there is, and that nature has been governed by the same rules at all times and places, makes it possible for natural science to be confident that it can explain such things as how life began.
“You eventually get used to looking at girls picking their leotards out of their bums and that sort of stuff.”
“But now, being a parent, I go home and see my son and I forget about any mistake I ever made or the reason I'm upset. I get home and my son is smiling or he comes running to me. It has just made me grow as an individual and grow as a man.”