Let us add that in our sphere of power not only all the conditions are fulfilled which the law of gravitation requires, but, what is still more satisfactory, all the conditions also which befit the metaphysical constitution of a primitive substance. We have a centre (_matter_), the existence of which essentially depends on the existence of a principle of activity (_form_) constituting a virtual sphere. Take away the substantial form, and the matter will cease to have existence. Take away the virtual sphericity, and the centre will be no more. But let the spherical form be created; the centre will immediately be called into existence as the essential and intrinsic term of sphericity, it being impossible for a real sphericity not to give existence to a real centre. And although this spherical form possesses an intensity of power decreasing in proportion as the sphere expands, still it has everywhere the same property of giving existence to its centre, since it has everywhere an intrinsic spherical character essentially connected with a central point as its indispensable term. Whence we see that the substantial form, though virtually extending into an indefinite sphere, is everywhere terminated to its own matter. Thus the Newtonian law and the _actio in distans_, far from being opposed to the known metaphysical law of the constitution of things, serve rather to make it more evident by affording us the means of representing to ourselves in an intelligible and almost tangible manner the ontologic relation of matter and form in the primitive substance. _A fourth objection._—A power which virtually extends throughout an indefinite sphere must possess an infinite intensity. But no material element possesses a power of infinite intensity. Therefore no element extends its power throughout an indefinite sphere. The major of this syllogism is proved thus: In an indefinite sphere we can conceive an infinite multitude of concentric spherical surfaces, to every one of which the active power of the element can be applied for the production of a finite effect. But the finite taken an infinite number of times gives infinity. Therefore the total action of an element in its sphere will be infinite; which requires a power of infinite intensity.