The greatest minds are capable of the greatest vices as well as of the greatest virtues.

Immoderate desire is the mark of a child, not a man.

The first method for estimating the intelligence of a ruler is to look at the men he has around him.

It is not titles that honor men, but men that honor titles.

One who deceives will always find those who allow themselves to be deceived.

Don't raise your voice, improve your argument.

I've come to believe that all my past failure and frustration were actually laying the foundation for the understandings that have created the new level of living I now enjoy.

Wonder is the beginning of wisdom.

Man is the only creature who refuses to be what he is.

Wrong life cannot be lived rightly.

None but ourselves can free our minds.

We are all born ignorant, but one must work hard to remain stupid

A good teacher protects his pupils from his own influence.

Our virtues and our failings are inseparable, like force and matter. When they separate, man is no more

Beauty is not in the face; beauty is a light in the heart.

Thoughts without content are empty, intuitions without concepts are blind.

A person who spends more than he earns is a fool

Medicine heals diseases of the body, wisdom frees the soul from passions.

The path to success is to take massive, determined action.

The smaller the mind, the greater the conceit.

In the practice of tolerance, one's enemy is the best teacher.