Well, I can't help wondering what his bet would have looked like if he were inclining on the other side...
Pascal admits that reason cannot determine anything, so he's inventing this funny little demonstration: let's suppose that God exists, let's toss a coin and then have a look at it: head or tale - you win if He exists and you believe that He exists, you "loose" if He doesn't exist but you believe that He exists. Did I get it right?
Quite a commercial way of seeing things, isn't it
?