It is common knowledge, however, that this is not such an easy matter with dreams. In the case of slips, our method worked in a number of cases, but we encountered some where the subject did not wish to say anything--in fact, indignantly rejected the answer that we suggested. Instances of the first method are entirely lacking in the case of dreams; the dreamer always says he knows nothing. He cannot deny our interpretation, for we have none. Shall we then give up the attempt? Since he knows nothing and we know nothing and a third person surely knows nothing, it looks as though there were no possibility of discovering anything. If you wish, discontinue the investigation. But if you are of another mind, you can accompany me on the way. For I assure you, it is very possible, in fact, probable, that the dreamer does know what his dream means, but does _not know that he knows, and therefore believes he does not know_. You will point out to me that I am again making an assumption, the second in this short discourse, and that I am greatly reducing the credibility of my claim. On the assumption that the dream is a psychic phenomenon, on the further assumption that there are unconscious things in man which he knows without knowing that he knows, etc.--we need only realize clearly the intrinsic improbability of each of these two assumptions, and we shall calmly turn our attention from the conclusions to be derived from such premises. Yet, ladies and gentlemen, I have not invited you here to delude you or to conceal anything from you. I did, indeed, announce a _General Introduction to Psychoanalysis_, but I did not intend the title to convey that I was an oracle, who would show you a finished product with all the difficulties carefully concealed, all the gaps filled in and all the doubts glossed over, so that you might peacefully believe you had learned something new. No, precisely because you are beginners, I wanted to show you our science as it is, with all its hills and pitfalls, demands and considerations. For I know that it is the same in all sciences, and must be so in their beginnings particularly. I know, too, that teaching as a rule endeavors to hide these difficulties and these incompletely developed phases from the student. But that will not do in psychoanalysis. I have, as a matter of fact, made two assumptions, one within the other, and he who finds the whole too troublesome and too uncertain or is accustomed to greater security or more elegant derivations, need go no further with us. What I mean is, he should leave psychological problems entirely alone, for it must be apprehended that he will not find the sure and safe way he is prepared to go, traversable. Then, too, it is superfluous for a science that has something to offer to plead for auditors and adherents. Its results must create its atmosphere, and it must then bide its time until these have attracted attention to themselves.