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)

“The theory of rights enables us to rise and overthrow obstacles, but not to found a strong and lasting accord between all the elements which compose the nation.”
—Giuseppe Mazzini (1805–1872)