If the only tool you have is a hammer, you tend to see every problem as a nail.

The people who were trying to make this world worse are not taking the day off. Why should I?

It's kind of fun to do the impossible.

Never let the future disturb you. You will meet it, if you have to, with the same weapons of reason which today arm you against the present.

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

Failure is not our only punishment for laziness; there is also the success of others.

United we stand; divided we fall.

You say I started out with practically nothing, but that isn't correct. We all start with all there is, it's how we use it that makes things possible.

You must never be fearful about what you are doing when it is right.

I do not care so much what I am to others as I care what I am to myself.

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

Only the wisest and stupidest of men never change.

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

Everything I've ever done was out of fear of being mediocre.

The great art of life is sensation, to feel that we exist, even in pain.

There are no traffic jams on the extra mile.

The greatest sin is to think yourself weak

No one is free who has not obtained the empire of himself. No man is free who cannot command himself.

Patience is bitter, but its fruit is sweet.

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

Some people regard discipline as a chore. For me, it is a kind of order that sets me free to fly.