To go into temptation to find how strong you are, is as wise as to go before a mirror, with closed eyes, to find how you look when asleep.

Though my sight be lost, I do not yet lose my faith: when I can no longer see, I can still believe.

However bad a man, he will have some friends: however good, he will have some enemies.

As long as I fear my weakness, I am stronger than when I trust my strength.

Doubt is the tax man pays for the luxury of useless knowledge.

If silence is good for the wise, how much better is it for the foolish!

Few can tell what they know without also showing what they do not know.