A man is in the barber shop getting a haircut. As he is leaving, the barber points out a man who is homeless, filthy, dirty, unkept and says, "Do you see that man?"
He replied, "Yes, I see him."
The barber said, "There is not a God, because if there was, he would not allow him to live so despairingly."
The man told the barber, "According to your observation, with his long unkempt hair and beard; I must surmise that there are no barbers."
The barber said, "Yes there is. I am a barber, but he must allow me to give him a haircut and a shave."
The man said, "Exactly."