Bob Brunner got this one from the iVillage Joke of the Day Newsletter (submitted there by iVillager Spuderina).
Al replied, "Well, I believe that the combustion engine is evil and that we need to save the world from CFCs and that if any more Freon is used, the whole earth will become a greenhouse and we'll all die."
God beams at Al and says, "Yes, yes, my boy! You're quite correct! Come and sit at my right."
God then addresses Bill Clinton. "Bill, what do you believe in?"
Bill Clinton replies, "Well, I believe in power to the people. I think people should be able to make their own choices about things and that no one should ever be able to tell someone else what to do. I also believe in feeling peoples' pain."
God thinks for a second and says, "Okay, I can live with that. Come and sit at my left."
God then addresses Bill Gates; "Bill Gates, what do you believe in?"
Bill Gates says, "I believe you're in my chair."