Famous quotes containing the words produce and/or visible:
“A mind at liberty to reflect on its own observations, if it produce nothing useful to the world, seldom fails of entertainment to itself.”
—George Berkeley (1685–1753)
“Food probably has a very great influence on the condition of men. Wine exercises a more visible influence, food does it more slowly but perhaps just as surely. Who knows if a well-prepared soup was not responsible for the pneumatic pump or a poor one for a war?”
—G.C. (Georg Christoph)