[63] [cap.13] The connection therefore between the reason which is devoted to contemplation and those powers which are citizen wives, or concubines, has here been explained to the best of my power. We must now proceed to investigate what follows, and endeavour to frame a proper connection for an argument. "Abraham," says the sacred historian, "listened to the voice of Sarah." [18] For it is necessary for him who is a learner to be obedient to the injunctions of virtue: