I find out what the world needs. Then I go ahead and try to invent it.

Anything that won't sell, I don't want to invent. Its sale is proof of utility, and utility is success.

To invent, you need a good imagination and a pile of junk.

My principal business is giving commercial value to the brilliant - but misdirected - ideas of others.

I never did anything by accident, nor did any of my inventions come by accident; they came by work.

First be sure a thing is wanted or needed, then go ahead.