Most of the things worth doing in the world had been declared impossible before they were done.
—Louis Brandeis (1856–1941) American Justice, Lawyer
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 Protestant Clergyman, Social Reformer, Abolitionist
Discovery consists in seeing what everyone else has seen and thinking what no one else has thought.