2006 年 2006 巻 57 号 p. 77-92,5
Spinoza's system, startling indeed with its strange appearance-Deus seu Natura, or God as the immanent cause of everything-, will be made more understandable if we consider it as a systematic attempt of nailing down a necessitarian concept of truth and existence. I shall examine his denial of contingent truth in the Tractatus intellectus emendatione which is closely related to Cartesian idea of certainty, and show how it brings Spinoza to the concept of the omne esse, the whole Being, where truth, existence and actuality are all flattened out into one reality sub specie aeternitatis. After reconstructing from a modal point of view the theory of human knowledge in the Ethica, I shall briefly discuss a strong notion of actuality Spinozan idea of necessity might convey, together with its ethical import.