[79] and, indeed, in the same manner as the encyclical branches of education contribute to the proper comprehension of philosophy, so also does philosophy aid in the acquisition of wisdom; for philosophy is an attentive study of wisdom, and wisdom is the knowledge of all divine and human things, and of the respective causes of them. Therefore, just as encyclical accomplishments are the handmaidens of philosophy, so also is philosophy the handmaiden of wisdom;