I never perfected an invention that I did not think about in terms of the service it might give others. I find out what the world needs, then I proceed to invent.
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.
Opportunity is missed by most people because it is dressed in overalls and looks like work.
The three things that are most essential to achievement are common sense, hard work and stick-to-it-iv-ness.
Just because something doesn't do what you planned it to do in the first place doesn't mean it's useless.
Until man duplicates a blade of grass, nature can laugh at his so-called scientific knowledge.
...quotes from Thomas Alva Edison