James Kinkaid

The phenomenological movement begins in the Prolegomena to Husserl’s Logical Investigations as a philosophy of logic. Despite this, remarkably little attention has been paid to Husserl’s arguments in the Prolegomena in the contemporary philosophy of logic. In particular, the literature spawned by Gilbert Harman’s work on the normative status of logic is almost silent on Husserl’s contribution to this topic. I begin by raising a worry for Husserl’s conception of ‘pure logic’ similar to Harman’s challenge to explain the connection between logic and reasoning. If logic is the study of the forms of all possible theories, it will include the study of many logical consequence relations; by what criteria, then, should we select one consequence relation as correct? I consider how Husserl might respond to this worry by looking to his late account of the ‘genealogy of logic’ in connection with Gurwitsch’s claim that ‘[i]t is to prepredicative perceptual experience … that one must return for a radical clarification and for the definitive justification of logic’. Drawing also on Sartre and Heidegger, I consider how prepredicative experience might constrain or guide our selection of a logical consequence relation and our understanding of connectives like implication and negation.

Husserl endorses ideal verificationism, the claim that there is a necessary correlation between truth and the ideal possibility of experience. This puts him in the company of semantic anti-realists like Dummett, Tennant, and Wright who endorse the knowability thesis that all truths are knowable. Unfortunately, there is a simple, seductive, and troubling argument due to Alonzo Church and Frederic Fitch that the knowability thesis collapses into the omniscience thesis that all truths are known. Phenomenologists should be worried. I assess the damage by surveying responses that may be open to Husserl. In particular, I explore whether Husserl ought to have adopted intuitionistic logic and motivate a restriction of ideal verificationism on phenomenological grounds.

Martin Heidegger closes his Winter Semester 1927–28 lectures by claiming that Kant’s Critique of Pure Reason, read through the lens of Edmund Husserl’s phenomenology, confirmed the accuracy of his philosophical path culminating in Being and Time. A notable interpretation of Heidegger’s debt to Kant, advanced by William Blattner, presents Heidegger as a temporal idealist. I argue that attention to Husserl’s adaptation of Kant’s critical philosophy shows that both Husserl and Heidegger are realists. I make my case by tracing a unified philosophical problematic through three puzzling passages: the Schematism chapter of the first Critique, Husserl’s thought experiment of the destruction of the world in Ideas, and the passage in Being and Time that motivates Blattner’s idealist reading. Husserl and Heidegger give accounts, derived from Kant, of how the consciousness of time makes it possible for objects to be perceived as enduring unities, as well as ‘genealogies of logic’ that show how a priori knowledge, including ontology, is possible. These accounts are idealistic only in the sense that they concern the ideal or essential features of intentionality in virtue of which it puts us in touch with things as they are independently of the contributions of any mind of any type.