Thomas A. Edison Quotes
Just because something doesn't do what you planned it to do doesn't mean it's useless.
Thomas A. Edison, 1847-1931, Inventor, Quoted in Christine Finn, Artifacts: An Archaeologist's Year in Silicon Valley 2001
Sourced by: Eigen's Political and Historical Quotations
Most of the great political leaders also have many failures, especially in the policy realm. For example, while most Americans remember that FDR’s policies led to our emergence from the Great Depression, many of his programs, did not work, others were declared unconstitutional and necer really tried, and still others were not significant in what they accomplished.
Thomas Alva Edison was an American inventor and businessman who has been described as America's greatest inventor. He developed many devices in fields such as electric power generation, mass communication, sound recording, and motion pictures. These inventions, which include the phonograph, the motion picture camera, and early versions of the electric light bulb, have had a widespread impact on the modern industrialized world. He was one of the first inventors to apply the principles of organized science and teamwork to the process of invention, working with many researchers and employees. He established the first industrial research laboratory.