Two things control men's nature, instinct and experience.

Belief is a wise wager. Granted that faith cannot be proved, what harm will come to you if you gamble on its truth and it proves false? If you gain, you gain all if you lose, you lose nothing. Wager, then, without hesitation, that He exists.

In faith there is enough light for those who want to believe and enough shadows to blind those who don't.

Faith indeed tells what the senses do not tell, but not the contrary of what they see. It is above them and not contrary to them.

It is the heart which perceives God and not the reason. That is what faith is: God perceived by the heart, not by the reason.