"Economics is the study of people in the ordinary business of life."-- Alfred Marshall, Principles of economics; an introductory volume (London: Macmillan, 1890)
"Economics is the science which studies human behavior as a relationship between given ends and scarce means which have alternative uses."
-- Lionel Robbins, An Essay on the Nature and Significance of Economic Science (London: MacMillan, 1932)
Economics is the "study of how societies use scarce resources to produce valuable commodities and distribute them among different people."
-- Paul A. Samuelson, Economics (New York: McGraw-Hill, 1948)
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