 Scotus calls the extra-mental universal the “common nature” (natura communis) and the principle of individuation the “haecceity” (haecceitas). The common nature is common in that it is “indifferent” to existing in any number of individuals. But it has extra-mental existence only in the particular things in which it exists, and in them it is always “contracted” by the haecceity. So the common nature humanity exists in both Socrates and Plato, although in Socrates it is made individual by Socrates’s haecceitas and in Plato by Plato’s haecceitas. The humanity-of-Socrates is individual and non-repeatable, as is the humanity-of-Plato; yet humanity itself is common and repeatable, and it is ontologically prior to any particular exemplification of it (Ordinatio 2, d. 3, pars 1, qq. 1–6, translated in Spade [1994], 57–113).