• Great inventions are never, and great discoveries are seldom, the work of any one mind. Every great invention is really an aggregation of minor inventions, or the final step of a progression. It is not usually a creation, but a growth, as truly so as is the growth of the trees in the forest.

    "The Growth of the Steam Engine". Popular Science, Volume 12, No. 1, p. 11, November 1877.