Perseverance is failing 19 times and succeeding the 20th.

It may have been in pieces, but I gave you the best of me.

Climbing to the top demands strength, whether it is to the top of Mount Everest or to the top of your career.

Change your thoughts and you change your world.

A man is but the product of his thoughts. What he thinks, he becomes.

After climbing a great hill, one only finds that there are many more hills to climb.

If the little bit you have is nothing special in itself, at least find a way of saying it that is a little bit special.

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

I don't think necessity is the mother of invention. Invention ... arises directly from idleness, possibly also from laziness. To save oneself trouble.

A Penny Saved is a Penny Earned

The fact that the great scientist believed in flying machines was the one thing that encouraged us to begin our studies.

If you can dream it, you can do it.

There are no traffic jams on the extra mile.

There is no passion to be found playing small - in settling for a life that is less than the one you are capable of living.

My dear friend, clear your mind of cant.

Every problem has in it the seeds of its own solution. If you don't have any problems, you don't get any seeds.

When they say the sky's the limit to me that's really true

Our patience will achieve more than our force.

Focus on where you want to go, not on what you fear.

The starting point of all achievement is desire.

When it comes down to it, I let them think what they want. If they care enough to bother with what I do, then I'm already better than them.