Man is spirit. But what is spirit? Spirit is the self. But what is the self? The self is a relation which relates itself to itself... Man is a synthesis of the infinite and the finite, of the temporal and the eternal, of possibility and necessity, in short, it is a synthesis. A synthesis is a relation between two factors. So regarded, man is not yet a self.

The Wisdom of Kierkegaard (ed. Simon and Schuster, 2013) - ISBN: 9781625581532