Everybody calls "clear" those ideas which have the same degree of confusion as his own.

When you work to please others you can't succeed, but the things you do to satisfy yourself stand a chance of catching someone's interest.

Our worst fears, like our greatest hopes, are not outside our powers, and we can come in the end to triumph over the former and to achieve the latter.

Just as those who practice the same profession recognize each other instinctively, so do those who practice the same vice.

A doctor who doesn't say too many foolish things is a patient half-cured.

Poets claim that we recapture for a moment the self that we were long ago when we enter some house or garden in which we used to live in our youth. But these are most hazardous pilgrimages, which end as often in disappointment as in success. It is in ourselves that we should rather seek to find those fixed places, contemporaneous with different years.

There is no idea that does not carry in itself a possible refutation, no word that does not imply its opposite.