Abstract
In the third part of the Ethics, Spinoza provides a naturalistic picture of human psychology. Spinoza's account distinguishes between active and passive affects. This chapter discusses how Spinoza's theory of affects demonstrates that the self with which human individuals identify in daily life is the result of a complex and constantly on‐going imaginative construction shaped by desires and causal interactions with other individuals and external causes. The core of the affective field is occupied by desire, which is the expression of the individual's conatus to persevere in its own existence. The whole social world arises as a product of the imaginative desire of the mind. Spinoza's account of the affects shows how both of these ideas originate from the complex interplay of affective conditionings and external causes, structured and shaped in the affective field produced by each individual's desiderative imagination.