“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)