It is astonishing what an effort it seems to be for many people to put their brains definitely and systematically to work.
Thomas A. EdisonI never pick up an item without thinking of how I might improve it. I never perfected an invention that I did not think about in terms of the service it might give others. I want to save and advance human life, not destroy it. I am proud of the fact that I never invented weapons to kill. The dove is my emblem.
Thomas A. Edison