Most of the exercise I get is from standing and walking around laboratory tables all day. I derive more benefit and entertainment from this than some of my friends and competitors get from playing games like golf.

Everything comes to him who hustles while he waits.

Books will soon be obsolete in the schools... Our school system will be completely changed in the next ten years.

To do much clear thinking a person must arrange for regular periods of solitude when they can concentrate and indulge the imagination without distraction.

Invention is 10% inspiration and 90% perspiration.

When I have fully decided that a result is worth getting I go ahead of it and make trial after trial until it comes.

I have not failed. I have successfully discovered 1200 ideas that don't work.