The history and the kinds of psychotherapy are briefly reviewed. A half dozen authors, who have written about what therapy is, are cited. Therapy by the priest is distinguished from that of the medical person. Insight therapy is differentiated from action therapy, and there is an interesting discussion of the criticisms each has received. The American Psychoanalytic Association is quoted as having concluded that 'the case is as good for one therapy as it is for another' in its evaluation of the efficacy of therapy. Among the references cited is The Greeks and the Irrational by E. R. Dodds. We are still having difficulty being rational.