Populo - Volume 1, Issue 1

Essay on a Short Passage from Spinoza’s Ethics. – HUP-243 – Craig Rivers

Proposition 5: In Nature there cannot be two or more substances having the

same nature or attribute.

If there were two or more distinct substances, they would have to be

distinguished from one another by a difference either in their attributes or in their

states (by 4). If they are distinguished only by a difference in their attributes, then

any given attribute can be possessed by only one of them. Suppose, then, that

they are distinguished by a difference in their states. But a substance is prior in

nature to its states (by 1), so we can set the states aside and consider the

substance in itself; and then there is nothing left through which one substance

can be conceived as distinguished from another, which by 4 amounts to saying

that we don’t have two or more substances ·with a single attribute·, but only one.

In this passage Spinoza lays the groundwork for later establishing that

there can be only one God, since different forms of substance can only be

distinguished by attributes. This essay will examine the definitions Spinoza is

using to define substance, attributes and modes; and investigate how these

definitions are used to support his notion of God. Further, a potential response

to a critique against the fifth proposition from his contemporary philosopher

Leibnitz via modern commentator Nadler, will be proposed. An examination of

ways Spinoza’s theory is debated among modern interpretations will be

discussed, along with how these ideas may have relevance to modern theories

of consciousness. In conclusion a case will be made that Spinoza’s definition of

God is circular in nature, due to an incoherence in his definition of substance.

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