Spinoza’s Psychological Theory [Revised entry by Michael LeBuffe on November 21, 2024. Changes to: Main text, Bibliography] In Part III of his Ethics, "On the Origin and Nature of the Affects," which is the subject of this article, Spinoza addresses two of the most serious challenges facing his thoroughgoing naturalism. First, he attempts to show that human beings follow the order of nature. Human beings, on Spinoza's view, have causal natures similar in kind to other ordinary objects, other "finite modes" in the technical language of the Ethics, so they ought to be analyzed and understood in the same way as the rest of... https://plato.stanford.edu/entries/spinoza-psychological/