In the case, however, of creatures without reason, as soon as appetite is roused for anything, straightway arises impulse to action. For the appetite of creatures without reason is irrational, and they are ruled by their natural appetite. Hence, neither the names of will or wish are applicable to the appetite of creatures without reason. For will is rational, free and natural desire, and in the case of man, endowed with reason as he is, the natural appetite is ruled rather than rules. For his actions are free, and depend upon reason, since the faculties of knowledge and life are bound up together in man. He is free in desire, free in wish, free in examination and investigation, free in deliberation, free in judgment, free in inclination, free in choice, free in impulse, and free in action where that is in accordance with nature.