To know oneself is not necessarily to improve oneself

We are more interested in making others believe we are happy than in trying to be happy ourselves.

We may say of agreeableness, as distinct from beauty, that it consists in a symmetry of which we know not the rules, and a secret conformity of the features to each other, as also to the air and complexion of the person.

There are some good marriages, but practically no delightful ones.

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

Men give away nothing so liberally as their advice.

Criticism sometimes is really praise, and praise sometimes slander.