 Chapter six of De Corpore is Hobbes’s main work on method. There Hobbes lays out a model of the proper form of a scientific explanation. A proper explanation tells you three things: what the cause is, the nature of the cause, and how the cause gives rise to the effect. Thus Hobbes accepts the Aristotelian idea that to have the best sort of knowledge, scientific knowledge, is to know something through its causes. Similarities to Aristotelian theories such as Zabarella’s show up even in section one of chapter six. Here Hobbes defines philosophy as knowledge acquired by correct reasoning. It is both knowledge of effects that you get through conception of their causes and knowledge of causes that you get through conception of their visible effects. Already we see signs of the Aristotelian picture in which you come to know the cause by knowing the visible effect and to know the effect by knowing the cause.