Then for Physiques, that is, the knowledge of the subordinate, and secundary causes of naturall events; they render none at all, but empty words. If you desire to know why some kind of bodies sink naturally downwards toward the Earth, and others goe naturally from it; The Schools will tell you out of Aristotle, that the bodies that sink downwards, are Heavy; and that this Heavinesse is it that causes them to descend: But if you ask what they mean by Heavinesse, they will define it to bee an endeavour to goe to the center of the Earth: so that the cause why things sink downward, is an Endeavour to be below: which is as much as to say, that bodies descend, or ascend, because they doe. Or they will tell you the center of the Earth is the place of Rest, and Conservation for Heavy things; and therefore they endeavour to be there: As if Stones, and Metalls had a desire, or could discern the place they would bee at, as Man does; or loved Rest, as Man does not; or that a peece of Glasse were lesse safe in the Window, than falling into the Street.