Famous quotes containing the words test and/or gas:
“If a test of civilization be sought, none can be so sure as the condition of that half of society over which the other half has power.”
—Harriet Martineau (1802–1876)
“Man moves in all modes, by legs of horses, by wings of winds, by steam, by gas of balloon, by electricity, and stands on tiptoe threatening to hunt the eagle in his own element.”
—Ralph Waldo Emerson (1803–1882)