 
                            
                        
                        
                        “This isn't right. This isn't even wrong.”
                                        
                                        Response after reading a colleague's paper, quoted in The Successful Toastmaster: A Treasure Chest of Introductions, Epigrams, Humor, and Quotations (1966) by Herbert Victor Prochnow, p. 350, and in Mathematical Apocrypha Redux : More Stories and Anecdotes of Mathematicians and the Mathematical (2005) by Steven George Krantz, p. 194 
This paper is so bad it is not even wrong. 
As quoted in Comic Sections : The Book of Mathematical Jokes, Humour, Wit, and Wisdom (1993) by Des MacHale 
Das is nicht einmal falsch. 
It is not even wrong. 
As quoted in Not Even Wrong : The Failure Of String Theory and the Search for Unity in Physical Law (2006) by Peter Woit (2006), Preface, p. xii
                                    
 
        
     
                             
                             
                             
                             
                             
                            