Through all the years of experimenting and research, I never once made a discovery. I start where the last man left off. … All my work was deductive, and the results I achieved were those of invention pure and simple.

As quoted in Makers of the Modern World : The Lives of Ninety-two Writers, Artists, Scientists, Statesmen, Inventors, Philosophers, Composers, and Other Creators who Formed the Pattern of Our Century (1955) by Louis Untermeyer, p. 227.