People are generally better persuaded by the reasons which they have themselves discovered than by those which have come in to the mind of others.

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

The last function of reason is to recognize that there are an infinity of things which surpass it.

Man's true nature being lost, everything becomes his nature; as, his true good being lost, everything becomes his good.

If we let ourselves believe that man began with divine grace, that he forfeited this by sin, and that he can be redeemed only by divine grace through the crucified Christ, then we shall find peace of mind never granted to philosophers. He who cannot believe is cursed, for he reveals by his unbelief that God has not chosen to give him grace.

To scorn philosophy is truly to philosophize.

Habit is a second nature that destroys the first. But what is nature? Why is habit not natural? I am very much afraid that nature itself is only a first habit, just as habit is a second nature.