[Christianity] endeavors equally to establish these two things: that God has set up in the Church visible signs to make himself known to those who should seek him sincerely, and that he has nevertheless so disguised them that he will only be perceived by those who seek him with all their heart.

However vast a man's spiritual resources, he is capable of but one great passion.

There are two equally dangerous extremes-to shut reason out, and to let nothing else in.

The law required what it could not give. Grace gives that which it requires.

If god does not exist, one loses nothing by believing in him anyway, while if he does exist, one stands to lose everything by not believing.

It is not permitted to the most equitable of men to be a judge in his own cause.

Let no one say that I have said nothing new... the arrangement of the subject is new. When we play tennis, we both play with the same ball, but one of us places it better.