Online source "Now those who knew Mr. Watt, had to contemplate a man whose genius could create such an engine, and indulge in the most abstruse speculations of philosophy, and could at once pass from the most sublime researches of geology and physical astronomy, the formation of our globe, and the structure of the universe, to the manufacture of a needle or a nail; who could discuss in the same conversation and with equal accuracy, if not with the same consummate skill, the most forbidding details of art, and the elegances of classical literature; the most abstruse branches of science, and the niceties of verbal criticism." Online source.