Originally posted by JohnMartin
View Post
is the cause of quantity and not the substantial form. The quantity of a body is an accident not determinative of the nature of the substance per se. The substantial form (sf), which is per se determinative of the substance does not cause quantity.
That you are trivially wrong is demonstrable simply by using your argument w.r.t. a brazen sphere instead of a soul: For if sf does cause quantity then the sf of marble would always be the same sf, causing the same quantity of marble. But as marble occurs in many diverse quantities, there is another cause of marble quantity, as an accident of the substance of marble. That cause of quantity is matter. Hence the brazen sphere does not cause quantity and therefore the brazen sphere does not have mass. But brazen spheres do have mass - so your argument must be flawed. The actual flaw is left as an exercise for you.
Matter is not the primordial substance.
Matter is the can be or does be. Prime matter is the first can be. Matter is not equivalent to the chemical elements and does not imply mass.
I see no reason to accept your version of Aristotle's description of 'matter' over his.
Comment