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Appetite is essentially insatiable, and where it operates as a criterion of both action and enjoyment (that is, everywhere in the Western world since the sixteenth century) it will infallibly discover congenial agencies (mechanical and political) of expression.

Marshall McLuhan, W. Terrence Gordon, Barrington Nevitt, Harold Adams Innis (2005). “Marshall McLuhan: American advertising”
Appetite is essentially insatiable, and where it operates as a criterion of both action and enjoyment (that is, everywhere in the Western world since the sixteenth century) it will infallibly discover congenial agencies