They use the word “persona” to mean an individual subsistence, an individual existing subsistence of an essence. You can have an essence of humanity, for example, and a persona is an individual existing human being, an individual subsistence of that essence. On this philosophy, on this metaphysics, all human beings in some way share the essence of being human, but each individual is a persona because each individual is a unique individual existence, individual subsistence, of that essence. That’s