Also quoted as, "Yes, America is gigantic, but a gigantic mistake." in Memories of a Psycho-analyst, ch.9 (1959) by Ernest Jones; and as, "America is the most grandiose experiment the world has seen, but I am afraid it is not going to be a success." in Freud: the Man and his Cause, pt. 3, ch. 12, (1980), by Ronald W. Clark; as quoted in Penguin Dictionary of Modern Quotations by Robert Andrews, Penguin Books, 2001.https://en.wikiquote.org/wiki/Sigmund_Freud