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Spinoza's Ethics

Philosophical treatise written by Spinoza

  • 22 min read
  • 5 chapters
Spinoza's Ethica .
Unknown author · Public domain

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The Ethics is perhaps the most ambitious attempt to apply Euclid's method in philosophy, which was referred to as “more geometrico” which in Latin meant “in a geometrical manner”. Spinoza puts forward a small number of definitions and axioms from which he attempts to derive hundreds of propositions and corollaries, such as "when the Mind imagines its own lack of power, it is saddened by it", "a free man thinks of nothing less than of death", and "the human Mind cannot be absolutely destroyed with the Body, but something of it remains which is eternal."

Summary

Part I: Of God

The first part of the book addresses the relationship between God and the universe. Spinoza was engaging with a tradition that held that God exists outside of the universe, that God created the universe for a reason, and that God could have created a different universe according to his will. Spinoza denies each point. According to Spinoza, God is the natural world. Spinoza concludes that God is the substance comprising the universe; that God exists in itself, not outside of the universe; and that the universe exists as it does from necessity, not because of an anthropomorphic reason or will.

Spinoza argues through propositions. He considers the conclusions he reaches to be the necessary logical result of combining the Definitions and Axioms he provides. He starts with the proposition that "there cannot exist in the universe two or more substances having the same nature or attribute." He then argues that objects and events must not merely be caused if they occur, but that they must be prevented if they do not. If something is non-contradictory, there is no reason that it should not exist. Spinoza builds from these starting ideas. If substance exists it must be infinite, because if it is not infinite another finite substance would have to exist to take up the remaining parts of its finite attributes, something that is impossible according to an earlier proposition. Spinoza then uses the Ontological Argument as the justification for the existence of God and argues that God must possess all attributes infinitely. Since no two things can share attributes, "besides God no substance can be granted or conceived."

As with many of Spinoza's claims, what this means is a matter of dispute. Spinoza claims that the things that make up the universe, including human beings, are God's "modes". This means that everything is, in some sense, dependent upon God. The nature of this dependence is disputed. Some scholars say that the modes are properties of God in the traditional sense. Others say that modes are effects of God. Either way, the modes are also logically dependent on God's essence, in this sense: everything that happens follows from the nature of God, just as it follows from the nature of a triangle that the sum of its angles are equal to two right angles or 180 degrees. Since God had to exist with the nature that he has, nothing that has happened could have been avoided; and, if God has fixed a particular fate for a particular mode, there is no escaping it. As Spinoza puts it, "A thing which has been determined by God to produce an effect cannot render itself undetermined."

Part II: Of the Nature & Origin of the Mind

The second part focuses on the human mind and body. Spinoza attacks several Cartesian positions: (1) that the mind and body are distinct substances that can affect each other; (2) that we know our minds better than we know our bodies; (3) that our senses may be trusted; (4) that despite being created by God we can make mistakes, namely, when we affirm, of our own free will, an idea that is not clear and distinct. Spinoza denies each of Descartes's points. Regarding (1), Spinoza argues that the mind and the body are a single thing that is being thought of in two different ways. The whole of nature can be fully described in terms of thoughts or in terms of bodies. However, we cannot mix these two ways of describing things, as Descartes does, and say that the mind affects the body or vice versa. Moreover, the mind's self-knowledge is not fundamental: it cannot know its own thoughts better than it knows the ways in which its body is acted upon by other bodies.

Further, there is no difference between contemplating an idea and thinking that it is true, and there is no freedom of the will at all. Sensory perception, which Spinoza calls "knowledge of the first kind", is entirely inaccurate, since it reflects how our own bodies work more than how things really are. We can also have a kind of accurate knowledge called "knowledge of the second kind", or "reason". This encompasses knowledge of the features common to all things, and includes principles of physics and geometry. We can also have "knowledge of the third kind", or "intuitive knowledge". This is a sort of knowledge that, somehow, relates particular things to the nature of God. While scholars differ in their interpretations of intuitive knowledge; Kristin Primus suggests that "in this 'third kind of cognition,' one immediately understands, given one's understanding of the very being of God, the very being of things."

Part III: Of the Origin & Nature of Emotions

In the third part of the Ethics, Spinoza argues that all things, including human beings, strive to preserve their perfection of power in being unaffected. Spinoza states that virtue is equal to power (i.e., self-control).

Spinoza explains how this desire ("conatus") underlies the movement and complexity of our emotions and passions (i.e., joy and sadness that are building blocks for all other emotions). Our mind is in certain cases active, and in certain cases passive. In so far as it has adequate ideas it is necessarily active, and in so far as it has inadequate ideas, it is necessarily passive.

Definitions of the affects

Part IV: Of the Servitude of Humanity, or the Strength of the Emotions

The fourth part analyzes human passions, which Spinoza sees as aspects of the mind that direct us outwards to seek what gives pleasure and shun what gives pain. The "bondage" he refers to is domination by these passions or "affects" as he calls them. Spinoza considers how the affects, ungoverned, can torment people and make it impossible for mankind to live in harmony with one another.

Part V: Of the Power of the Intellect, or the Liberty of Humanity

The fifth part argues that reason can govern the affects in the pursuit of virtue, which for Spinoza is self-preservation: only with the aid of reason can humans distinguish the passions that truly aid virtue from those that are ultimately harmful. By reason, we can see things as they truly are, sub specie aeternitatis, "under the aspect of eternity," and because Spinoza treats God and nature as indistinguishable, by knowing things as they are we improve our knowledge of God. Seeing that all things are determined by nature to be as they are, we can achieve the rational tranquility that best promotes our happiness, and liberate ourselves from being driven by our passions.

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