This book is about depression. The author uses the classical myth of Orpheus and Eurydice to illustrate the inner world of depression, and to give an understanding of its existential conditions. Orpheus who has lost his beloved Eurydice is permitted by the gods to take her back from the underworld on condition that he does not look at her on the way back to the earth. He almost succeeds, but in the last moment he cannot resist turning around to look at her, and Eurydice disappears once again into