Courage, above all things, is the first quality of a warrior.

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

The greatest of wealth is the richness of the soul.

You are not a drop in the ocean. You are the entire ocean, in a drop.

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

If you're happy, don't worry you'll get over it.

Stubborn and ardent clinging to one's opinion is the best proof of stupidity.

In anger we should refrain both from speech and action.

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

A man is literally what he thinks.

It seems essential, in relationships and all tasks, that we concentrate only on what is most significant and important.

Judge a man by his questions rather than by his answers.

Experience keeps a dear school, but fools will learn in no other.

If you do what you've always done, you'll get what you've always gotten.

The first thing you'll have to do, is the last thing you wished.

Experience is the only prophecy of wise men.

One of the truest tests of integrity is its blunt refusal to be compromised.

A good teacher protects his pupils from his own influence.

I wanted to change the world. But I have found that the only thing one can be sure of changing is oneself.

Men become wise just as they become rich, more by what they save than by what they receive.

Challenges are gifts that force us to search for a new center of gravity. Don't fight them. Just find a new way to stand.