For other uses of Ecce Homo, see Ecce Homo (disambiguation)

Ecce Homo: How One Becomes What One Is () is the last original book written by philosopher Friedrich Nietzsche before his final years of insanity that lasted until his death in 1900. It was written in 1888 and was not published until 1908.
According to one of Nietzsche's most prominent English translators, Walter Kaufmann, the book offers "Nietzsche's own interpretation of his development, his works, and his significance." The book contains several chapters with ironic self-laudatory titles, such as "Why I Am So Wise", "Why I Am So Clever", "Why I Write Such Good Books" and "Why I Am a Destiny". In a paradoxical way, Ecce Homo is the quintessential reflection of Nietzsche's humility as a philosopher, writer and thinker.

Within this work, Nietzsche is self-consciously striving to present a new image of the philosopher and of himself, for example, a philosopher "who is not an Alexandrian academic nor an Apollonian sage, but Dionysian." On these grounds, Kaufmann considers Ecce Homo a literary work comparable in its artistry to Vincent van Gogh's paintings. Just as Socrates was presented in Plato's Apology as the wisest of men precisely because he freely admitted to his own ignorance, Nietzsche argues that he himself is a great philosopher because of his withering assessment of the pious fraud of the entirety of Philosophy which he considered as a retreat from honesty when most necessary, and a cowardly failure to pursue its stated aim to its reasonable end. Nietzsche insists that his suffering is not noble but the expected result of hard inquiry into the deepest recesses of human self-deception, and that by overcoming one's agonies a person achieves more than any relaxation or accommodation to intellectual difficulties or literal threats. He proclaims the ultimate value of everything that has happened to him (including his father's early death and his near-blindness – an example of love of Fate or amor fati). In this regard, the wording of his title was not meant to draw parallels with Jesus, but suggest a contrast, that Nietzsche truly is "a man." Nietzsche's point is that to be "a man" alone is to be more than "a Christ".
One of the main purposes of Ecce Homo was to offer Nietzsche's own perspective on his work as a philosopher and human being. He wrote: "Under these circumstances I have a duty against which my habits, even more the pride of my instincts, revolt at bottom – namely, to say: Hear me! For I am such and such a person. Above all, do not mistake me for someone else!" Throughout the course of the book, he expounds — in the characteristically hyperbolic style found in his later period (1886–1888) — upon his life as a child, his tastes as an individual, and his vision for humanity. He gives reviews and insights about his various works, including: The Birth of Tragedy, The Untimely Meditations, Human, All Too Human, The Dawn, The Gay Science, Thus Spoke Zarathustra, Beyond Good and Evil, On the Genealogy of Morality, Twilight of the Idols and The Case of Wagner. The last chapter of Ecce Homo, entitled "Why I Am a Destiny", is primarily concerned with reiterating Nietzsche's thoughts on Christianity, corroborating Christianity's decadence and his ideas as to uncovering Christian morality.
He signs the book "Dionysus versus the Crucified."