Bertolt Brecht Quote

General, man is very useful.
He can fly and he can kill.
But he has one defect:
He can think.

"General, Your Tank Is a Powerful Vehicle", in "From a German War Primer", part of the Svendborg Poems (1939); as translated by Lee Baxandall in Poems, 1913-1956, p. 289 - Poems, 1913-1956 (1976)