Please explain this.... it makes no sense to me!
Looks to me like first of all Pascal assumes that religion is mere "imagination". Then he assumes that we are so stupid as to follow the one which offers us the "best"... "best" being a relative term would assume that "truth" would be different to different people. But then you being so scientific and all... surely you know that there can be only ONE truth or set of facts.
It is the belief system of those who do not believe in God. And you are right, it makes no sense except to them.