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

I dream. Sometimes I think that's the only right thing to do.

One who gains strength by overcoming obstacles possesses the only strength which can overcome adversity.

By three methods we may learn wisdom: first, by reflection which is noblest; second, by imitation, which is the easiest; and third, by experience, which is the bitterest.

Intelligence is the ability to adapt to change.

What lies behind us and what lies ahead of us are tiny matters compared to what lives within us.

Stupidity is a talent for misconception.

The ethos of redemption is realized in self-mastery, by means of temperance, that is, continence of desires.

Sometimes you will never know the value of a moment until it becomes a memory.

Choose rather to be strong of soul than strong of body.

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

There are two educations. One should teach us how to make a living and the other how to live.

Adapt what is useful, reject what is useless, and add what is specifically your own.

A house divided against itself cannot stand.

The object of the superior man is truth.

To kill an error is as good a service as, and sometimes even better than, the establishing of a new truth or fact

Most of us have far more courage than we ever dreamed possible

Doubt is the origin of wisdom

Promises are like crying babies in a theater, they should be carried out at once.

Learn from the mistakes of others. You can never live long enough to make them all yourself.

There is geometry in the humming of the strings. There is music in the spacing of the spheres.