Here I merely wish to reaffirm the fact that anti-semitism is so instinctive that it may quite simply be called one of the primal instincts of mankind, one of the important instincts by which the race helps to preserve itself against total destruction, I cannot emphasize the matter too strongly. Anti-semitism is not, as Jews have tried to make the world believe, an active prejudice. It is a deeply hidden instinct with which every man is born. He remains unconscious of it, as of all other instincts of self preservation, until something happens to awaken it.
Samuel Roth (Jewish author) Jews Must Live, 1934