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

There is a wisdom of the head, and... there is a wisdom of the heart.

It takes a great deal of bravery to stand up to our enemies, but just as much to stand up to our friends.

The greatest deception men suffer is from their own opinions.

Knowing is not enough, we must apply. Willing is not enough, we must do.

No one cares how much you know, until they know how much you care

There are no limitations to the mind except those we acknowledge.

Be silent or let thy words be worth more than silence.

To me, being an intellectual doesn't mean knowing about intellectual issues; it means taking pleasure in them.

The wise man should restrain his senses like the crane and accomplish his purpose with due knowledge of his place, time and ability.

An intelligent hell would be better than a stupid paradise.

In a good bookroom you feel in some mysterious way that you are absorbing the wisdom contained in all the books through your skin, without even opening them.

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

There is nothing more uncommon than common sense.

Everything excellent is as difficult as it is rare.

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

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

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.

Tell the truth. Sing with passion. Work with laughter. Love with heart. 'Cause that's all that matters in the end.

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

Let him who would move the world first move himself.