Every great improvement has come after repeated failures. Virtually nothing comes out right the first time. Failures, repeated failures, are finger posts on the road to achievement. One fails forward toward success.

The opportunities in this world are as great as we have the imagination to see them... but we never get that view from the bottom of the nest.

Great steps in human progress are made by things that don't work the way philosophy thought they should. If things always worked the way they should, you could write the history of the world from now on. But they don't, and it is those deviations from the normal that make human progress.

The future can be anything we want it to be, providing we have the faith and that we realize that peace, no less than war, required blood and sweat and tears.

People think of the inventor as a screwball, but no one ever asks the inventor what he thinks of other people.

You can send a message around the world in one-fifth of a second, yet it may take years for it to get from the outside of a man's head to the inside.

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