A thing worth having is a thing worth cheating for.

Imagination is everything. It is the preview of life's coming attractions.

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

Do you want to know who you are? Don't ask. Act! Action will delineate and define you.

I can never stand still. I must explore and experiment. I am never satisfied with my work. I resent the limitations of my own imagination.

What's the world's greatest lie?... It's this: that at a certain point in our lives, we lose control of what's happening to us, and our lives become controlled by fate.

Everything you want is out there waiting for you to ask. Everything you want also wants you. But you have to take action to get it.

I not only use all the brains that I have, but all that I can borrow.

Do not worry about holding high position; worry rather about playing your proper role.

I don't know who my grandfather was; I'm much more concerned to know what his grandson will be.

Do not go where the path may lead, go instead where there is no path and leave a trail.

Be happy, but never satisfied.

People who are unable to motivate themselves must be content with mediocrity, no matter how impressive their other talents.

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

When written in Chinese, the word 'crisis' is composed of two characters. One represents danger, the other opportunity.

Our patience will achieve more than our force.

All the darkness in the world cannot extinguish the light of a single candle.

We are citizens of the world. The tragedy of our times is that we do not know this.

I am always doing that which I can not do, in order that I may learn how to do it.

When I go, God's going to have to give up his favourite chair.

Ability is what you're capable of doing. Motivation determines what you do. Attitude determines how well you do it.