It is as commendable to think well of oneself when alone, as it is ridiculous to speak well of oneself among others.

There are various sorts of curiosity; one is from interest, which makes us desire to know that which may be useful to us; and the other, from pride which comes from the wish to know what others are ignorant of.

Jealousy lives upon doubts. It becomes madness or ceases entirely as soon as we pass from doubt to certainty.

Weakness is more opposed to virtue than is vice.

There are two sorts of constancy in love one arises from continually discovering in the loved person new subjects for love, the other arises from our making a merit of being constant.

Men frequently do good only to give themselves opportunity of doing ill with impunity.

Hypocrisy is an homage that vice renders to virtue.