Youth is a perpetual intoxication; it is a fever of the mind.

Whatever pretext we may give for our affections, often it is only interest and vanity which cause them.

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.

Strength and weakness of mind are misnomers; they are really nothing but the good or bad health of our bodily organs.

The strongest symptom of wisdom in man is his being sensible of his own follies.

We seldom praise anyone in good earnest, except such as admire us.

No man is clever enough to know all the evil he does.