Henry Dircks,
Perpetual Motion
“ Time was when wise men would have smiled and said, "A puff of steam—a mere puff of steam!"—and had some one, more sanguine than the rest, attempted by its application to produce a motion, he would have applied it to the floatboards of a wheel, as in Branca's engine, and have been disappointed. It is not given to man to know when the powers of any great agent have been fully developed ”
