Self-reflection is the school of wisdom.

Nature often lets us down when we most need her; let us turn to art.

It is better to have too much courtesy than too little, provided you are not equally courteous to all, for that would be injustice.

The sage has one advantage: he is immortal. If this is not his century, many others will be.

Don't show off every day, or you'll stop surprising people. There must always be some novelty left over. The person who displays a little more of it each day keeps up expectations, and no one ever discovers the limits of his talent.

It requires as much to tell the truth as to conceal it.

Knowledge without wisdom is double folly.