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that is the same unity of Notion and existence. The infinite is in the same way in itself and has also its Notion in itself; its Notion is its Being, and its Being its Notion; true infinity is therefore to be found in Spinoza. But he has no consciousness of this; he has not recognized this Notion as absolute Notion, and therefore has not expressed it as a moment of true existence; for with him the Notion falls outside of existence, into the thought of existence.

g. Finally Spinoza says in the seventh place: “God is a Being absolutely infinite, i.e. a substance consisting of infinite attributes, each of which expresses an eternal and infinite essence.” Does substance, one might here ask, possess an infinite number of attributes? But as with Spinoza there are only two attributes, thought and extension, with which he invests God, “infinite” is not to be taken here in the sense of the indeterminate but positively, as a circle is perfect infinity in itself.

The whole of Spinoza's philosophy is contained in these definitions, which, however, taken as a whole are formal; it is really a weak point in Spinoza that he begins thus with definitions. In mathematics this method is permitted, because at the outset we there make assumptions, such as that of the point and line; but in Philosophy the content should be known as the absolutely true. It is all very well to grant the correctness of the name-definition, and acknowledge that the word “substance” corresponds with the conception which the definition indicates, but it is quite another question to determine whether this content is absolutely true. Such a question is not asked in the case of geometrical propositions, but in philosophic investigation it is the very thing to be first considered, and this Spinoza has not done. Instead of only explaining these simple thoughts and representing them as concrete in the definitions which he makes, what he ought to have done was to examine whether this content is true. To all appearance it is only the explanation of the words that is given, but the content of the words is held to be established. All further content is merely derived from that, and proved thereby; for on the first content all the rest depends, and if it is established as a basis, the other necessarily follows. “The attribute is that which the understanding thinks of God.” But here the question is: How does it come that besides the Deity there now appears the understanding, which applies to absolute substance the two forms of thought and extension? and whence come these two forms themselves? Thus everything proceeds inwards, and not outwards; the determinations are not developed from substance, it does not resolve itself into these attributes.

2. These definitions are followed by axioms and propositions in which Spinoza proves a great variety of points. He descends from the universal of substance through the particular, thought and extension, to the individual. He has thus all three moments of the Notion, or they are essential to him. But the mode, under which head falls individuality, he does not recognize as essential, or as constituting a moment of true existence in that existence; for it disappears in existence, or it is not raised into the Notion.

a. The main point then is that Spinoza proves from these Notions that there is only One Substance, God. It is a simple chain of reasoning, a very formal proof. “Fifth Proposition: There cannot be two or more substances of the same nature or of the same attribute.” This is implied already in the definitions; the proof is therefore a useless and, wearisome toil, which only serves to render Spinoza more difficult to understand. “If there were several” (substances of the same attribute) “they must be distinguished from one another either by the diversity of their attributes or by the diversity of their affections” (modes). “If they are distinguished by their attributes, it would be directly conceded that there is only one substance having the same attribute.” For the attributes are simply what the understanding grasps as the essence of the one substance, which is determined in itself, and not through anything else. “But if these substances were distinguished by their affections, since substance is by nature prior to its affections it would follow that if from substance its affections were abstracted and it were regarded in itself, i.e., in its truth, it could henceforth not be regarded as distinct from other substances.” “Eighth Proposition: All substance is necessarily infinite. Proof: For otherwise it must be limited by another substance of the same nature, in which case there would be two substances of the same attribute, which is contrary to the fifth proposition.” “Every attribute must be conceived for itself,” as determination reflected on itself. “For attribute is what the mind conceives of substance as constituting its essence, from which it follows that it must be conceived through itself,” i.e., substance is what is conceived through itself (see the fourth and third definitions). “Therefore we may not argue from the plurality of attributes to a plurality of substances, for each is conceived by itself, and they have all been, always and at the same time, in substance, without the possibility of the one being produced by the other.” “Substance is indivisible. For if the parts retained the nature of the substance, there would be several substances of the same nature, which is contrary to the fifth proposition. If not, infinite substance would cease to exist, which is absurd.”(3)“Fourteenth Proposition: No other substance than God can either exist or be conceived. Proof: