Whenever a thing stands in front of your eyes and you put it out in order to explain it, you definitely place yourself out of it. Even if you may claim a right way of thinking or a moral one. When the thing is a person, the error is called egoism. When it is an object, it receives the noble names of objectivity and rationalism. This is the case of Aristotle’s conception of the things as compounded from form and matter, with the privilege assigned to form. The Stoics preferred to explain them rather by matter. With disordering consequences for the ancient philosophers. But the Stoics explained the world for a moral accordance with it, and their ethical view never admits egoistical passions.