By thus emphasizing the unconscious in mental life we have called forth all the malevolence in humanity in opposition to psycho-analysis. Do not be astonished at this and do not suppose that this opposition relates to the obvious difficulty of conceiving the Unconscious or to the relative inaccessibility of the evidence which supports its existence. I believe it has a deeper source. Humanity has in the course of time had to endure from the hands of science two great outrages upon its naïve self-love. The first was when it realized that our earth was not the centre of the universe, but only a tiny speck in a world-system of a magnitude hardly conceivable; this is associated in our minds with the name of Copernicus, although Alexandrian doctrines taught something very similar. The second was when biological research robbed man of his peculiar privilege of having been specially created, and relegated him to a descent from the animal world, implying an ineradicable animal nature in him: this transvaluation has been accomplished in our own time upon the instigation of Charles Darwin, Wallace, and their predecessors, and not without the most violent opposition from their contemporaries. But man’s craving for grandiosity is now suffering the third and most bitter blow from present-day psychological research which is endeavouring to prove to the “ego” of each one of us that he is not even master in his own house, but that he must remain content with the veriest scraps of information about what is going on unconsciously in his own mind. We psycho-analysts were neither the first nor the only ones to propose to mankind that they should look inward; but it appears to be our lot to advocate it most insistently and to support it by empirical evidence which touches every man closely. This is the kernel of the universal revolt against our science, of the total disregard of academic courtesy in dispute, and the liberation of opposition from all the constraints of impartial logic. And besides this, we have been compelled to disturb the peace of the world in yet another way, as you will soon hear. NINETEENTH LECTURE RESISTANCE AND REPRESSION We now need more data before we can advance further in our understanding of the neuroses; two observations lie to hand for us. Both are very remarkable and at first were very surprising. You are of course prepared for both of them by the work we did last year.