I discover myself on the verge of a usual mistake.

When everything seems to be going against you, remember that the airplane takes off against the wind, not with it ....

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

I am the lizard king. I can do anything.

I have always found that mercy bears richer fruits than strict justice.

Don't fear failure. Not failure, but low aim, is the crime. In great attempts it is glorious even to fail.

Every problem is a gift - without problems we would not grow.

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

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

We cannot direct the wind, but we can adjust the sails.

The only way of discovering the limits of the possible is to venture a little way past them into the impossible.

Great work requires great and persistent effort for a long time. … Character has to be established through a thousand stumbles.

So early in my life, I had learned that if you want something, you had better make some noise.

When obstacles arise, you change your direction to reach your goal; you do not change your decision to get there.

I think nature's imagination Is so much greater than man's, she's never going to let us relax.

They deem me mad because I will not sell my days for gold; and I deem them mad because they think my days have a price.

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

We need never be ashamed of our tears.

You are not here merely to make a living. You are here in order to enable the world to live more amply, with greater vision, with a finer spirit of hope and achievement. You are here to enrich the world, and to impoverish yourself if you forget the errand.

This is one small step for a man, one giant leap for mankind.

Take things as they are. Punch when you have to punch. Kick when you have to kick.