This chapter unpacks the dense statement that Kierkegaard gives of his ontology of the self at the start of The Sickness unto Death. It considers the claims that the self is a synthesis of factors that stand in tension with one another (the finite and the infinite, etc.); that it is not simply a relation but a dynamic, continuing process of relating to itself; that it is only able to be this because it relates to another (God); and that selfhood, so considered, is a goal which human beings fall short of attaining. Throughout, Kierkegaard’s thought is explicated by comparison and contrast with other philosophical accounts of the self, referring to Descartes, Locke, Fichte, Heidegger, Sartre and Frankfurt; and the continuing relevance of Kierkegaard’s account to recent discussions of selfhood, the relation of the self or person to the human being, and the extent to which the self can be thought of as self-constituted is emphasized.