By thus bringing into prominence the unconscious in psychic life, we have raised the most evil spirits of criticism against psychoanalysis. Do not be surprised at this, and do not believe that the opposition is directed only against the difficulties offered by the conception of the unconscious or against the relative inaccessibility of the experiences which represent it. I believe it comes from another source. Humanity, in the course of time, has had to endure from the hands of science two great outrages against its naive self-love. The first was when humanity discovered that our earth was not the center of the universe, but only a tiny speck in a world-system hardly conceivable in its magnitude. This is associated in our minds with the name "Copernicus," although Alexandrian science had taught much the same thing. The second occurred when biological research robbed man of his apparent superiority under special creation, and rebuked him with his descent from the animal kingdom, and his ineradicable animal nature. This re-valuation, under the influence of Charles Darwin, Wallace and their predecessors, was not accomplished without the most violent opposition of their contemporaries. But the third and most irritating insult is flung at the human mania of greatness by present-day psychological research, which wants to prove to the "I" that it is not even master in its own home, but is dependent upon the most scanty information concerning all that goes on unconsciously in its psychic life. We psychoanalysts were neither the first, nor the only ones to announce this admonition to look within ourselves. It appears that we are fated to represent it most insistently and to confirm it by means of empirical data which are of importance to every single person. This is the reason for the widespread revolt against our science, the omission of all considerations of academic urbanity, and emancipation of the opposition from all restraints of impartial logic. We were compelled to disturb the peace of the world, in addition, in another manner, of which you will soon come to know. NINETEENTH LECTURE GENERAL THEORY OF THE NEUROSES _Resistance and Suppression_ In order to progress in our understanding of the neuroses, we need new experiences and we are about to obtain two. Both are very remarkable and were at the time of their discovery, very surprising. You are, of course, prepared for both from our discussions of the past semester.