I find my greatest pleasure, and so my reward, in the work that precedes what the world calls success.

I did not fail two thousand times. I merely found two thousand ways not to make a lightbulb.

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 better use for my brain than to poison it with alcohol. To put alcohol in the human brain is like putting sand in the bearings of an engine.

I'll try anything...I'll even try Limburger cheese!

My main purpose in life is to make enough money to create ever more inventions…. The dove is my emblem…. I want to save and advance human life, not destroy it…. I am proud of the fact that I have never invented weapons to kill….

Maturity is often more absurd than youth and very frequently is most unjust to youth.