… is from page 186 of Ludwig von Mises’s 1948 memo to Leonard Read, published for the first time in its original English as chapter 42, under the title “The Objectives of Economic Education,” in the 1990 collection of some of Mises’s shorter essays, Economic Freedom and Interventionism (Bettina Bien Greaves, ed.):
The survival of civilization can be jeopardized by the misdeeds of individual dictators, Fuhrers, or Duces. Its preservation, reconstruction, and continuation, however, require the joint efforts of all men of good will.
DBx: Pictured here – I believe on the grounds that the Foundation for Economic Education then occupied in Irvington-on-Hudson, New York – are (from left to right) Lawrence Fertig, Ludwig von Mises, Leonard Read, and Henry Hazlitt.