Most of the things worth doing in the world had been declared impossible before they were done.
—Louis Brandeis (1856–1941) American Justice, Lawyer
I am proud of the fact that I never invented weapons to kill.
—Thomas Edison (1847–1931) American Inventor, Scientist, Entrepreneur
A tool is but the extension of a man’s hand and a machine is but a complex tool; and he that invents a machine augments the power of man and the well-being of mankind.
—Henry Ward Beecher (1813–87) American Clergyman, Writer
Today every invention is received with a cry of triumph which soon turns into a cry of fear.
—Bertolt Brecht (1898–1956) German Poet, Playwright, Theater Personality
Discovery consists in seeing what everyone else has seen and thinking what no one else has thought.