If God exists, not seeking God must be the gravest error imaginable. If one decides to sincerely seek for God and doesn't find God, the lost effort is negligible in comparison to what is at risk in not seeking God in the first place.

The two principles of truth, reason and senses, are not only both not genuine, but are engaged in mutual deception. The senses deceive reason through false appearances, and the senses are disturbed by passions, which produce false impressions.

We must kill them in war, just because they live beyond the river. If they lived on this side, we would be called murderers.

Fashion is a tyrant from which nothing frees us. We must suit ourselves to its fantastic tastes. But being compelled to live under its foolish laws, the wise man is never the first to follow, nor the last to keep it.

Atheism shows strength of mind, but only to a certain degree.

The heart has its reasons of which reason knows nothing. We feel it in a thousand things. I say that the heart naturally loves the Universal Being, and naturally loves itself; and it gives itself to one or the other, and hardens itself against one or the other, as it chooses...it is the heart that feels God, not the reason; this is faith.

The end point of rationality is to demonstrate the limits of rationality.