text: "What!" you say, "do dumb animals move in disturbed and ill-ordered fashion?" I should say that they moved in disturbed and ill-ordered fashion, if their nature admitted of order; as it is, they move in accordance with their nature. For that is said to be "disturbed" which can also at some other time be "not disturbed"; so, too, that is said to be in a state of trouble which can be in a state of peace. No man is vicious except one who has the capacity of virtue; in the case of dumb animals their motion is such as results from their nature. But, not to weary you, a certain sort of good will be found in a dumb animal, and a certain sort of virtue, and a certain sort of perfection – but neither the Good, nor virtue, nor perfection in the absolute sense. For this is the privilege of reasoning beings alone, who are permitted to know the cause, the degree, and the means. Therefore, good can exist only in that which possesses reason.