I pass at length to the other part of ethics which concerns the method or way which leads to liberty. In [the following], therefore, I shall treat of the power of reason, showing how much reason itself can control the emotions, and then what is freedom of mind or blessedness. Thence we shall see how much stronger the wise man is than the ignorant. In what manner and what way the intellect should be rendered perfect, and with what art the body is to be cared for in order that it may properly perform its functions, I have nothing to do with here; for the former belongs to logic, the latter to medicine. I shall occupy myself here, as I have said, solely with the power of the mind or of reason, first of all showing the extent and nature of the authority which it has over the emotions in restraining them and governing them; for that we have not absolute authority over them we have already demonstrated. The Stoics indeed thought that the emotions depend absolutely on our will, and that we are absolutely masters over them; but they were driven, by the contradiction of experience, though not by their own principles, to confess that not a little practice and study are required in order to restrain and govern the emotions. This one of them attempted to illustrate, if I remember rightly, by the example of two dogs, one of a domestic and the other of a hunting breed; for he was able by habit to make the house dog hunt, and the hunting dog, on the contrary, to desist from running after hares.