Pascal's Wager
Nota Bene: Of course, this isn't exactly a proof, but I feel it worthy of the page,
for rather obvious reasons.
1. If God does not exist, then an atheist and a theist have the same fate: nothing.
2. Thus there is no eternal advantage to being correct in atheism. In addition,
there is no temporal advantage either since atheists do not seem to be happier
than theists, in fact they seem much less so in most cases.
3. Also, the atheist can never know he was correct, and the theist can never know
he was wrong.
4. If God does exist, then atheist will likely suffer eternally for rejecting belief
in God; at least his atheism will not help him. The theist, however, will likely
live in eternal happiness with God; at least his theism will not hurt him.
5. Thus there is an eternal advantage in being correct in theism.
6. Also, the theist will know forever his is correct, and the atheist will always
know and regret that he was wrong.
7. Therefore it is more reasonable to believe in God.