Introduction to Psychoanalysis (German: Vorlesungen zur Einführung in die Psychoanalyse) is a set of lectures given by Sigmund Freud 1915-17 (published 1916-17), which became the most popular and widely translated of his works. The 28 lectures offered an elementary stock-taking of his views of the unconscious, dreams, and the theory of neuroses at the time of writing, as well as offering some new technical material to the more advanced reader.