Abstract
To sum up, we need both further observational study and speculative induction before we can more fully grasp the processes of treatment. We may then possibly discover that the differences between the processes of treatments of different lengths (or different names) are less important (as regards progress and outcome) than certain helpful processes which are common to all. Meanwhile, we must in some way not allow our very research to make our therapy sterile. Perhaps one of the important attributes of psychotherapy is that it remain fresh so that, in a sense, the processes of psychotherapy may be forever undergoing change.
And now I must apologize for the characteristic fault of papers on psychotherapy mentioned earlier—namely that I have dealt with only one small aspect of the subject, and have probably written as if this small aspect were all-important.