This isn’t right. This isn’t even wrong.

[Das ist nicht nur nicht richtig, es ist nicht einmal falsch!]

Wolfgang Pauli (1900-1958) American physicist

(Attributed)

Quoted by R. Peierls in “Wolfgang Ernst Pauli, 1900-1958,″ Biographical Memoirs of Fellows of the Royal Society (1960): “... a friend showed him the paper of a young physicist which he suspected was not of great value but on which he wanted Pauli’s views. Pauli remarked sadly ‘That’s not right. It’s not even wrong.’” More discussion here.