A problem well stated is a problem half-solved.

We have been measuring too much in terms of the dollar. What we should do is think in terms of useful materials-things that will be of value to us in our daily life.

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.

We are just in the kindergarten of uncovering things; there is no downcurve in science.

The world hates change, yet it is the only thing that has brought progress.

The person who doesn't know something can't be done will often find a way to go ahead and do it.

An inventor fails 999 times, and if he succeeds once, he's in. He treats his failures simply as practice shots.