Wisdom is not the product of schooling, but of the lifelong attempt to acquire it.

Science may set limits to knowledge, but should not set limits to imagination.

Out of suffering have emerged the strongest souls; the most massive characters are seared with scars.

Courage is resistance to fear, mastery of fear - not absence of fear.

When I stand before God at the end of my life, I would hope that I would not have a single bit of talent left, and could say, 'I used everything you gave me'.

Don't criticize what you don't understand, son. You never walked in that man's shoes.

Never pick a fight with an ugly person, they've got nothing to lose.

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

In any moment of decision, the best thing you can do is the right thing. The worst thing you can do is nothing.

He who chooses the beginning of the road chooses the place it leads to.

I hear and I forget. I see and I remember. I do and I understand.

Words mean more than what is set down on paper. It takes the human voice to infuse them with deeper meaning.

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

Let no man pull you low enough to hate him.

We thought that we had the answers, it was the questions we had wrong.

You cannot truly listen to anyone and do anything else at the same time.

Be frank and explicit. That is the right line to take when you wish to conceal your own mind and to confuse the minds of others.

A person who spends more than he earns is a fool

You are braver than you believe, stronger than you seem, and smarter than you think.

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

If we can really understand the problem, the answer will come out of it, because the answer is not separate from the problem.