In Olli Koistinen (ed.), The Cambridge Companion to Spinoza's Ethics. Cambridge: Cambridge University Press. pp. 56–78 (2009)

Valtteri Viljanen
University of Turku
In this essay, I present the basics of Spinoza’s ontology and attempt to go some distance toward clarifying its most pertinent problems. I start by considering the relationship between the concepts of substance and mode; my aim is to show that despite his somewhat peculiar vocabulary there is much here that we should find rather familiar and intelligible, as Spinoza’s understanding of these matters harks back to the traditional distinction of substance and accident, or thing and property. After this I move on to fitting the concept of attribute into Spinoza’s conceptual architecture, and then examine the implications concerning real existents and causation that Spinoza sees these fundamental conceptual commitments as having. The most startling of these implications is of course his monism, according to which there is only one substance. Through this examination it becomes clear that it is only when Spinoza makes the transition from considerations concerning concepts to existential claims that the collision with what was previously commonly accepted becomes inevitable.
Keywords Spinoza  ontology  substance  attribute  modification  monism
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Spinoza on Activity in Sense Perception.Valtteri Viljanen - 2014 - In José Filipe Silva & Mikko Yrjönsuuri (eds.), Active Perception in the History of Philosophy: From Plato to Modern Philosophy. Dordrecht: Springer. pp. 241-254.

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