Quantity Theory

Famous quotes containing the words quantity and/or theory:

“Value is the life-giving power of anything; cost, the quantity of labour required to produce it; its price, the quantity of labour which its possessor will take in exchange for it.”
—John Ruskin (1819–1900)

“No theory is good unless it permits, not rest, but the greatest work. No theory is good except on condition that one use it to go on beyond.”
—André Gide (1869–1951)