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.

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

here is a great difference between knowing a thing and understanding it. You can know a lot and not really understand anything.

Inventing is a combination of brains and materials. The more brains you use, the less material you need.

You will never stub your toe standing still. The faster you go, the more chance there is of stubbing your toe, but the more chance you have of getting somewhere.

I've never heard of anyone stumbling on something sitting down.

My definition of an educated man is the fellow who knows the right thing to do at the time it has to be done. You can be sincere and still be stupid.