3. Individual beings, which considered under the attribute of thought are ideas, and under the attribute of extension are bodies, Spinoza comprehends under the conception of accidence, or, as he calls it, mode. By modes we are therefore to understand the changing forms of substance. The modes stand related to the substance as the rippling waves of the sea to the water of the sea, as forms constantly disappearing and never having a real being. In fact this example goes too far, for the waves of the sea are at least a part of the water of the sea, while the modes, instead of being parts of the substance, are essentially nothing and without being. The finite has no existence as finite; only the infinite substance has actual existence. Substance, therefore, could not be regarded more falsely than if it should be viewed as made up of modes. That would be, Spinoza remarks, as if one should say that the line is made up out of points. It is just as false to affirm that Spinoza identifies God and the world. He identifies them so little that he would rather say that the world, as world, _i. e._ as an aggregate of individuals, does not at all exist; we might rather say with Hegel that he denies the world (his system is an acosmism), than with Bayle, that he makes every thing God, or that he ascribes divinity to every thing. Whence do finite things or individuals arise, if they can have no existence by the side of substance? They are only the product of our deceptive apprehension. There are two chief ways of knowledge—the intuitive, through the reason, and the imaginative. To the latter belong the knowledge of experience, and all that is abstract, superficial, and confused; to the former, the collection of all fitting (adequate) ideas. It is only the fault of the imagination that we should look upon the world as a manifoldness of individuals; the manifoldness is only a form of representation. The imagination isolates and individualizes what the reason sees together in its unity. Hence it is only as considered through the imagination (experience or opinion) that modes are _things_; the reason looks upon them as necessary, or, what is the same thing, as eternal.