I learned that courage was not the absence of fear, but the triumph over it. The brave man is not he who does not feel afraid, but he who conquers that fear.

The greatest glory in living lies not in never falling, but in rising every time we fall.

Be as you wish to seem.

Do not judge me by my successes, judge me by how many times I fell down and got back up again.

Lead from the back and let others believe they are in front.

Appearances matter and remember to smile.

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

A winner is a dreamer who never gives up.

What we usually consider as impossible are simply engineering problems, there's no law of physics preventing them.