[30] but of the father and mother the appellations are common, but their powers are different. [13] [14] At all events we shall speak with justice, if we say that the Creator of the universe is also the father of his creation; and that the mother was the knowledge of the Creator with whom God uniting, not as a man unites, became the father of creation. And this knowledge having received the seed of God, when the day of her travail arrived, brought forth her only and well-beloved son, perceptible by the external senses, namely this world.