You'll never get ahead of anyone as long as you try to get even with him.

Isn't it astonishing that all these secrets have been preserved for so many years just so we could discover them!

Once you learn to quit, it becomes a habit.

The marble not yet carved can hold the form of every thought the greatest artist has.

Don't just read the easy stuff. You may be entertained by it, but you will never grow from it.

In winter, I plot and plan. In spring, I move.

No great discovery was ever made without a bold guess.

You can wish for things in the future to be different, but in this moment you have to accept things as they are.

It is our choices...that show what we truly are, far more than our abilities.

Whether you think you can, or you think you can't - you're right.

Do not look for approval except for the consciousness of doing your best.

All thinking men are atheists.

Don't wish it were easier, wish you were better.

You yourself, as much as anybody in the entire universe, deserve your love and affection.

Courage is the most important of all the virtues, because without courage you can't practice any other virtue consistently. You can practice any virtue erratically, but nothing consistently without courage.

I will never be by violence constrained to do anything.

I am the lizard king. I can do anything.

The way to become rich is to put all your eggs in one basket and then watch that basket.

I don’t think we are going to become extinct. We are very clever and very resourceful.

Your success and happiness lies in you. Resolve to keep happy, and your joy and you shall form an invincible host against difficulties.

Humans have come into being for the sake of each other, so either teach them, or learn to bear them.