Vanessa de Harven

Everything is Something is a book about Stoic metaphysics. It argues that the Stoics are best understood as forging a bold new path between materialism and idealism, a path best characterized as non-reductive physicalism. To be sure, only individual bodies exist for the Stoics, but not everything there is exists — some things are said to subsist. However, this is no Meinongian move beyond existence, to the philosophy of intentionality (as the language of subsistence might suggest), but a one-world metaphysics that both counts its entities by logical criteria, and grounds them in body by physical principles, yielding a tightly ordered ontology in which everything is Something and nothing is not. This last phrase is not innocent. It invokes the Stoic innovation of Something (ti) as the highest genus of reality, and takes the stand that it is not only principled and coherent, but comprehensive — anything that is not Something is nothing at all (for the initiated: there is no class of Not-Somethings between Something and nothing). Further, everything that is Something is either itself a body, or ontologically dependent on body. Herein lies the Stoics’ non-reductive physicalism, and the beating heart of their response to the Battle of Gods and Giants in Plato’s Sophist: a one-world metaphysics. The foundation of Stoic metaphysics is their ground-breaking corporealism, which introduces an alternative to both atomism and hylomorphism. The Stoics are continuum physicists for whom body as such, i.e. solid, three-dimensional extension, is homogeneous, partless, uniform, and infinitely divisible without reaching minima (atoms). And because body is not conceived along hylomorphic lines, i.e. as a composite of matter and form, the Stoics are free to make body fundamental. Out of two basic bodies, then (the archai), and by the tantalizing mechanism of through and through blending (krasis di’ holou), Stoic physics constructs the cosmos (and every body it contains) in completely corporealist terms, composing one thing out of many. And once those bodies are built, Stoic logic gives an account of their identity conditions, kinds, and qualities according to the vexed schema of the Categories, making now many out of one by the constitution relation, as a statue is constituted by its clay. With these distinct mereological relations of composition and constitution, Stoic corporealism artfully divides the labor of Plato’s Forms between physics and logic. Next in the ontological order, with bodies as their foundation, are the incorporeals (asōmata): space (place, room, and surface), time, void, and the (awkwardly named) sayables, or lekta (roughly, though controversially, the meanings of our words). These entities do not exist; they do, however, subsist, inheriting their physical properties and, hence, their subsistence, from the bodies on which they depend. For example, place depends for its three-dimensional (non-solid) extension on the bodies that occupy or delimit it. The ontological dependence of space, time, and their novel semantic entities (the lekta) on body, is what takes Stoic metaphysics beyond corporealism to non-reductive physicalism, beyond a merely sorted ontology to an ordered, one-world metaphysics. Each incorporeal counts as Something according to the Stoic criterion for subsistence (hence, the theory is non-reductive), and what they have in common as incorporeals (and what makes the account physicalist), is their dependence on underlying body. In addition to the incorporeals, the Stoics also recognize the subsistence of things like creatures of fiction and geometrical limits, which they classify as neither corporeal nor incorporeal. What these entities have in common is that they are products of thought; and since thoughts are themselves bodies according to Stoic corporealism, this remains a physicalist account. As before, the account is not Meinongian; neither all objects of thought, nor all products of thought count as Something. Indeed, the Stoics’ eliminative treatment of universals (and Forms) turns on their denying concepts (ennoēmata) a place on the ontological map altogether — concepts are simply not Somethings (and, again, not some further category of Not-Somethings, intermediate between Something and nothing at all). If all this is right, then the Stoics are not flat-footed materialists or ersatz Platonists, as so often assumed, but our first non-reductive physicalists.

The Stoics are famously committed to the thesis that only bodies are, and for this reason they are rightly called “corporealists.” They are also famously compared to Plato’s earthborn Giants in the Sophist, and rightly so given their steadfast commitment to body as being. But the Stoics also notoriously turn the tables on Plato and coopt his “dunamis proposal” that being is whatever can act or be acted upon to underwrite their commitment to body rather than shrink from it as the Giants do. The substance of Stoic corporealism, however, has not been fully appreciated. This paper argues that Stoic corporealism goes beyond the dunamis proposal, which is simply an ontological criterion for being, to the metaphysics of body. This involves, first, an account of body as metaphysically simple and hence fundamental; second, an account of body as malleable and continuous, hence fit for blending (krasis di’ holou) and composition. In addition, the metaphysics of body involves a distinction between this composition relation seen in the cosmology, and the constitution relation by which the four-fold schema called the Stoic Categories proceeds, e.g. the relation between a statue and its clay, or a fist and its underlying hand. It has not been appreciated that the cosmology and the Categories are distinct — and complementary — explanatory enterprises, the one accounting for generation and unity, the other taking those individuals once generated, and giving a mereological analysis of their identity and persistence conditions, kinds, and qualities. The result is an elegant division of Plato’s labor from the Battle of Gods and Giants. On the one hand, the Stoics rehabilitate the crude cosmology of the Presocratics to deliver generation and unity in completely corporeal terms, and that work is found in their Physics. On the other hand, they reform the Giants and “dare to corporealize,” delivering all manner of predication (from identity to the virtues), and that work is found in Stoic Logic. Recognizing the distinctness of these explanatory enterprises helps dissolve scholarly puzzles, and harmonizes the Stoics with themselves.