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)

“Won’t this whole instinct matter bear revision?
Won’t almost any theory bear revision?
To err is human, not to, animal.”
—Robert Frost (1874–1963)