Wrong life cannot be lived rightly.

Don't take tomorrow to bed with you.

The greatest pride, or the greatest despondency, is the greatest ignorance of one's self.

A friend to all is a friend to none

Creativity is the greatest rebellion in existence.

True knowledge lies in knowing how to live.

Common sense is in spite of, not as the result of education.

The only real mistake is the one from which we learn nothing.

All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident.

Fear doesn't exist anywhere except in the mind.

A crust eaten in peace is better than a banquet partaken in anxiety.

All imperfection is easier to tolerate if served up in small doses.

You can best serve civilization by being against what usually passes for it.

Nobody has the power to take two steps together; you can take only one step at a time.

Anger begins in folly, and ends in repentance.

When prosperity comes, do not use all of it.

Obsession is the wellspring of genius and madness.

Chaos is a name for any order that produces confusion in our minds.

It is not the strength, but the duration, of great sentiments that makes great men.

To be one, to be united is a great thing. But to respect the right to be different is maybe even greater.

Intelligence is a moral category.