 The three lectures are titled "The Sea and the Desert", "The Stone and the Shell", and "Ishmael–Don Quixote".The theme of the book is the sensibility of romanticism, especially in its search for escape from responsibility and community.It deals with poems by Coleridge, Byron, Hopkins, Blake, but above all with Herman Melville's Moby-Dick, which is analysed with psychoanalytical tools (especially used to interpret the main characters of the novel) and with an analogical interpretation of such symbols as the sea, the ship, the stone, and the shell.