"It appers impossible for anyone seriously interested in our civilization to ignore this book. It is a ‘must’ book for those in every branch of science . . . in addition, economists, politicians, statesmen, and businessmen cannot afford to overlook cybernetics and its tremendous, even terrifying implications.

"It is a beautifully written book, lucid, direct, and despite its complexity, as readable by the layman as the trained scientist."
—John B. Thurston, The Saturday Review of Literature