More than one was one of Derrida's dearest expressions. Based on this formula, which is the title of this paper, Jean-Luc Nancy reflects on the nature of that more than one to show how one in the one plus one of the number series cannot be taken to be the origin of the monotonous linear succession of the arithmetic operation: 1, 2, 3, 4,. The addition also constitutes the difference with itself in which one is displaced out of itself, and in this way, "one" exists as rhythm. a rhythm puts into play the very statute of one and the numbering. The one that exceeds itself, the exceeding one upsets itself into the unit of a pulsation, into the absolute simplicity of one envoy, of one transport. We face, therefore, a different logic from that of the unit, in which "one" does not allow itself to be known nor counted.