The lectures became the most popular and widely translated of his works. However, some of the positions outlined in Introduction to Psychoanalysis would subsequently be altered or revised in Freud's later work; and in 1932 he offered a second set of seven lectures numbered from 29–35—New Introductory Lectures on Psychoanalysis—as complement (though these were never read aloud and featured a different, sometimes more polemical style of presentation).