"A salesman, like the storage battery in your car, is constantly discharging energy. Unless he is recharged at frequent intervals he soon runs dry. This is one of the greatest responsibilities of sales leadership."

Source: John R. Coyne, Spiro T. Agnew (1972). “The Impudent Snobs: Agnew Vs. the Intellectual Establishment”, New Rochelle, N.Y. : Arlington House