[The tract De Testimonio Animae is cast into an apologetic form and very properly comes into place here. It was written in Orthodoxy and forms a valuable preface to the De Anima, of which we cannot say that it is quite free from errors. As it refers to the Apology, we cannot place it before that work, and perhaps we shall not greatly err if we consider it a sequel to the Apology. If it proves to others the source of as much enjoyment as it affords to me, it will be treasured by them as one of the most precious testimonies to the Gospel, introducing Man to himself.] ↩