My favorite part of the book is the fourth major topic, "Wit and its Relation to the Unconscious." The jokes might seem a bit stale. My printing of this book is copyright 1938, and comparison of its index with the online version of pages shown indicates that the newer version is not quite the same number of pages, but the book itself is the same as the original. For people who have trouble remembering psychological concepts or intellectual approaches to anything, but who never forget a joke, Freud's ability to keep referring to the same joke in different contexts offers an ideal opportunity to see how an expert in a field can intertwine basic concepts with known ideas to create the sensation of intellectual progress. Speaking of experts, the index has 16 entries for Heine, the first of which is merely a footnote on how dreams might work like Heine, who was famous for making the bad poetry of the King of Bavaria (Herr Ludwig?) ridiculous, in THE INTERPRETATION OF DREAMS. The poem is only in German in the edition I have, so the comment, "He does it by using even worse rhymes," might only be funny for people who know what German sounds like. The final mention of Heine, which might be to a joke that Freud had not told before, is to a verse in which he complained, "until at last the buttons tore from the pants of my patience," in Freud's discussion of the various forms of the comic. You might not appreciate how big this book is until you have read it.