“As an undergraduate I was a member of the Voltaire Society, and we used to have dinner with Bertrand Russell, and he was 85 years old. And we thought, you know, he is getting on in years, and we put the question to him, we said: "Well, suppose it were all true, that after you pass away you show up at the Pearly Gates, what would you say to Him?" And Russell didn't hesitate a minute, he said: "I would say to Him: you didn't give us enough evidence!”

Source: Wikiquote