Definitions in Political Economy, / Preceded by an Inquiry Into the Rules which Ought to Guide Political Economists in the Definition and Use of Their Terms; with Remarks on the Deviation from These Rules in Their Writings

by T. R. Malthus

VARIATIONS OF PRICES AND VALUES.

57. Prices and values vary as the demand directly and the supply inversely. When the demand is given, prices and values vary inversely as the supply; when the supply is given, directly as the demand.