Ecce Homo, which is Latin for "behold the man," is an autobiography like no other. Deliberately provocative, Nietzsche subverts the conventions of the genre and pushes his philosophical positions to combative extremes, constructing a genius-hero whose life is a chronicle of incessant self-overcoming. Written in 1888, a few weeks before his descent into madness, the book passes under review all of Nietzsche's previous works so that we, his "posthumous" readers, can finally understand him on his own terms. He reaches final reckonings with his many enemies, including Richard Wagner, German nationalism, "modern men" in general, and above all, Christianity, proclaiming himself the Antichrist. Ecce Homo is the summation of an extraordinary philosophical career, a last great testament to Nietzsche's will.

A main purpose of the book was to offer Nietzsche's own perspective on his work as a philosopher and human being. Ecce Homo also forcefully repudiates those...