Above all be of single aim; have a legitimate and useful purpose, and devote yourself unreservedly to it.

Good advice is always certain to be ignored, but that's no reason not to give it.

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

A wise man can learn more from a foolish question than a fool can learn from a wise answer.

Power always thinks it has a great soul and vast views beyond the comprehension of the weak.

When you judge another, you do not define them, you define yourself.

Let him who would move the world first move himself.

What's done can't be undone.

Only idiots refuse to change their minds.

And no one will listen to us until we listen to ourselves.

Knowledge speaks, but wisdom listens

All that we see or seem is but a dream within a dream.

The pendulum of the mind oscillates between sense and nonsense, not between right and wrong.

It is neither good nor bad, but thinking makes it so.

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

The use of travelling is to regulate imagination by reality, and instead of thinking how things may be, to see them as they are.

Think globally, act locally.

Without courage, wisdom bears no fruit.

Your inner world has its own taste, has its own fragrance, has its own light. And it is utterly silent.

Share our similarities, celebrate our differences.

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