What we plant in the soil of contemplation, we shall reap in the harvest of action.

It's not that I'm so smart, it's just that I stay with problems longer.

High achievement always takes place in the framework of high expectation.

Men can starve from a lack of self-realization as much as they can from a lack of bread.

The final forming of a person's character lies in their own hands.

I shut my eyes in order to see.

There are things known and there are things unknown, and in between are the doors of perception.

We are not permitted to choose the frame of our destiny. But what we put into it is ours.

It is better to keep your mouth closed and let people think you are a fool than to open it and remove all doubt.

Nobody cares how much you know, until they know how much you care.

All action results from thought, so it is thoughts that matter.

In matters of style, swim with the current; in matters of principle, stand like a rock.

Insanity: doing the same thing over and over again and expecting different results.

Everything that we see is a shadow cast by that which we do not see.

What worries you, masters you.

Talent is a flame. Genius is a fire.

Judge a man by his questions rather than his answers.

Once we accept our limits, we go beyond them.

We cannot teach people anything; we can only help them discover it within themselves.

Mystery creates wonder and wonder is the basis of man's desire to understand.

Never mistake motion for action.

Progress lies not in enhancing what is, but in advancing toward what will be.

Be nice to people on your way up because you'll meet them on your way down.

The real meaning of enlightenment is to gaze with undimmed eyes on all darkness.

The mind is like an iceberg, it floats with one-seventh of its bulk above water.

A gem cannot be polished without friction, nor a man perfected without trials.

Be less curious about people and more curious about ideas.

To every action there is always opposed an equal reaction.

I think; therefore I am.

You can't stay in your corner of the forest waiting for others to come to you. You have to go to them sometimes.

You cannot push any one up a ladder unless he be willing to climb a little himself.

It is not enough to have a good mind; the main thing is to use it well.

Nothing exists except atoms and empty space; everything else is opinion.

We are what we believe we are.

A fine quotation is a diamond in the hand of a man of wit and a pebble in the hand of a fool.

If you don't know where you are going, you might wind up someplace else.

Your goals, minus your doubts, equal your reality.

Rough diamonds may sometimes be mistaken for worthless pebbles.

Challenging the meaning of life is the truest expression of the state of being human.

There are three classes of people: those who see, those who see when they are shown, those who do not see.

You're either part of the solution or you're part of the problem.

In the end, people are persuaded not by what we say, but by what they understand.

It is the set of the sails, not the direction of the wind that determines which way we will go.

We should not moor a ship with one anchor, or our life with one hope.

If youth knew; if age could.

The universe is full of magical things, patiently waiting for our wits to grow sharper.

Our knowledge is a little island in a great ocean of nonknowledge.

Do not let what you cannot do interfere with what you can do.

If you do not conquer self, you will be conquered by self.

Courage is the first of human qualities because it is the quality which guarantees the others.