Found while trying to decide whether to keep various paperbacks from among my father's books:
It is not always a question of the Emperor having no clothes on. Sometimes it is, "Is that an Emperor at all?"
--Idries Shah, Reflections, p. 145 (1977 Penguin paperback edition)
(Unlike some of Shah's other books, this one features a bunch of pieces apparently written by Shah "in the Sufi tradition," not only actual traditional Sufi stories.)