Here is Freud's one complete presentation of the whole science which he founded. These 28b lectures to laymen set forth the fundamental theories upon which all modern psychoanalysis is based. Yet they are simple, almost conversational in tone. They sum up the results of a lifetime of devoted, painstaking research. Freud describes with a startling frankness the methods and results of psychoanalysis and also its difficulties and limitations as only a master and originator of new school of thought could do.