Beth Lord

This chapter argues that while Spinoza adheres to medieval Galenism as an explanatory framework for living bodies, he rejects it as a framework for human experience and motivation, resulting in a concept of the human lifeform that is at once medieval and modern. After an account of Galen’s concept of the living body and the medieval adoption of his ideal of proportional balance, the chapter discusses Spinoza’s Galenism in the Short Treatise and shows how he goes on to replace the Galenic notion of essential proportion with the more mechanistic concept of the ratio of motion and rest in the Ethics. The chapter concludes by showing how the conatus doctrine marks Spinoza’s rejection of Galenism as an explanatory framework for what the living being feels, wants, and seeks.

In this paper, two different ways of thinking about individuality in Spinoza are presented to draw out what is at stake in trying to make sense of what could be described as a double point of view of the degree of the power to act of a singular thing in Spinoza’s Ethics: sometimes it seems to be fixed to a precisely determined degree; sometimes it seems to admit a certain degree of variation. The problem of resolving this apparent contradiction has been responsible for a variety of interpretations among scholars working in the field of Spinoza studies, notably the different interpretations of Spinoza’s theory of relations offered by Pierre Macherey and Gilles Deleuze. Deleuze’s interpretation of the dynamic changes in an individual’s power to act diverges somewhat from that of Macherey. For Macherey, dynamic changes are incorporated by an individual according to the varying degree, or proportion, to which the active expression of its fixed power to act are inhibited or limited. Whereas for Deleuze, an individual’s power to act is open to “metaphysical” or ontological changes. An individual for Deleuze is limited by the passive affections that it experiences in its interactions with other more composite bodies, which, at any given moment, have the potential to limit its further integration, and, therefore, the further development of its power to act, and by consequence, its actual existence. This limit determines the margin of variation, or proportion, of the expression of the given individual’s power to act, which varies from a minimum, below which it would cease to exist (intensity = 0), to a maximum, which would only be limited by the extent to which its power to act is further integrated at any given moment in more composite relations, expressing the affective life of the individual. The paper will examine the implications of this difference to their respective interpretations of Spinoza, with a view to characterising the role that Spinoza plays in Deleuze’s broader project of constructing a philosophy of difference.