Nothing ever built arose to touch the skies unless some man dreamed that it should, some man believed that it could, and some man willed that it must.

I object to people running down the future. I am going to live all the rest of my life there.

Every father should remember one day his son will follow his example, not his advice.

No one would have crossed the ocean if he could have gotten off the ship in the storm.

All human development, no matter what form it takes, must be outside the rules; otherwise we would never have anything new.

Whenever you look at a piece of work and you think the fellow was crazy, then you want to pay some attention to that. One of you is likely to be, and you had better find out which one it is. It makes an awful lot of difference.

We have a lot of people revolutionizing the world because they've never had to present a working model.