The author thinks that the time has come to present psychodynamics in a systematic way and correctly states that no exposition serving precisely this purpose exists in the textbook literature. He recognizes that the elaboration of a systematic dynamic approach in psychology was made possible by Freud, 'the individual, more than any other, responsible for this … position'. Most of the findings, theories and methods of psychoanalysis are accepted by the author. As a matter of fact, he bases his main teachings on psychoanalysis. However, he thinks that the psychoanalytic theory stands in need of methodological correction in many details and that