The great secret of true success, of true happiness, is this: the man or woman who asks for no return, the perfectly unselfish person, is the most successful.

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

There are only 3 colors, 10 digits, and 7 notes; its what we do with them that's important.

People often say that motivation doesn't last. Well, neither does bathing - that's why we recommend it daily.

Keep your face to the sunshine and you will never see the shadow.

Though the road's been rocky it sure feels good to me.

I may have had a lot of luck in my life, but I still need to find a challenge in the game.

Life is entrusted to man as a treasure which must not be squandered, as a talent which must be used well.

In a conflict between the heart and the brain, follow your heart.

The limits of the possible can only be defined by going beyond them into the impossible.

Others have seen what is and asked why. I have seen what could be and asked why not.

To be a great champion you must believe you are the best. If youre not, pretend you are.

If you can't fly then run, if you can't run then walk, if you can't walk then crawl, but whatever you do you have to keep moving forward.

The secret of genius is to carry the spirit of the child into old age, which means never losing your enthusiasm.

First ask yourself: What is the worst that can happen? Then prepare to accept it. Then proceed to improve on the worst.

A man can't soar too high, when he flies with his own wings.

Go on with what your heart tells you, or you will lose all.

Improvement makes strait roads, but the crooked roads without Improvement, are roads of Genius.

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

He was a dreamer, a thinker, a speculative philosopher... or, as his wife would have it, an idiot.

To myself I am only a child playing on the beach, while vast oceans of truth lie undiscovered before me.