Immanuel Kant

Immanuel Kant is presented as a decisive philosophical interlocutor in the book’s examination of how consciousness relates to objects, how time holds together and changes, and whether one consciousness can know another. The argument grants the importance of his account of temporal synthesis, but presses a recurring objection: formal unity, universal concepts, and relations of knowledge cannot by themselves supply the concrete, temporal connection they are meant to explain.

Consciousness, Objects, and the Limits of Knowledge

The book’s starting point is a phenomenological account of consciousness: following Edmund Husserl, it holds that every consciousness is consciousness of something. Consciousness is not a container of neutral contents, with a table somehow lodged inside it; the table is in space, beside the window, and consciousness reaches toward it. This account shifts the philosophical problem away from an inventory of inner representations and toward the relation between a knowing consciousness and the world it intends.

That shift matters to the discussion of Immanuel Kant because knowledge cannot be treated as a self-sufficient foundation. Consciousness can know and can know itself, but the book insists that it is more than knowledge turned back upon itself. A knowing consciousness must be conscious of itself as knowing its object; that awareness makes knowledge possible, but does not establish that the object exists in itself. The object remains distinct from the consciousness that knows it, and the relation does not erase the object’s independent being.

The same resistance to reducing being to knowledge shapes the book’s treatment of perception. A perceived table is not identical with the synthesis of impressions through which it appears: it is the transcendent limit and end of that synthesis. The argument rejects an account in which the perceived thing’s being amounts simply to being perceived. If perception is understood as a passive reception, the concept of passivity itself raises a difficulty: the one who suffers an affection must already exist in order to undergo it, and must in some way assume that existence. Being cannot be made into a mere product continuously sustained by another without losing its independence. These claims form part of the larger challenge to any philosophy that would measure existence by the conditions of knowing it.

Time as Order and Succession

The book distinguishes two aspects of temporality. Its static aspect concerns the formal order of before and after; its dynamic aspect concerns succession itself, in which what is present becomes past and what is future becomes former-future. Immanuel Kant is associated with the formal side of this problem: the order of time can be considered separately from the course or material flow of time. Yet separating the two clarifies the difficulty rather than resolving it. A sequence must be both ordered and genuinely successive.

The central problem is how one temporal state can be prior to another if each is treated as a complete, self-identical being in itself. For the first state to be prior, its being must point toward the second as its future; for the second to be posterior, it must retain the first as its past. Their relation therefore cannot be an external connection laid between two finished, isolated states. Each must in some way exist beyond itself, in relation to the other. The book uses this difficulty to argue that time is not assembled from timeless pieces by an additional operation without that operation itself becoming temporal.

Immanuel Kant, alongside René Descartes, is presented as locating the unity of temporal moments in a being that escapes temporality. For René Descartes, the unifying role belongs to God and continuous creation; for Immanuel Kant, it belongs to the “I think” and its forms of synthetic unity. The criticism is that a non-temporal source cannot confer temporal relations on moments while remaining wholly outside time. If the moments are kept strictly atemporal, their connection remains abstract and external; if their unity is to make them genuinely before and after, they must be temporalized. The proposed solution thus risks presupposing the very temporality it set out to explain.

The argument sharpens the point with the example of sugar dissolving. If God’s knowledge depends on an existence wholly outside time, God would not have to wait for the sugar to dissolve in order to know that it will. In that case, waiting and chronological order would be appearances of human finitude rather than real features of being. The same difficulty, the book says, applies to the Kantian “I think”: invoking an a priori unity does not explain how temporal moments are connected from within time. A succession that becomes succession only after a non-temporal unity has made it actual is no more intelligible than the original problem.

Kant Among Competing Accounts of Duration

The account of time is tested against rival approaches. Gottfried Wilhelm Leibniz rejects isolated instants in favor of continuity, while Henri Bergson describes duration as a melodic organization in which moments interpenetrate. The book acknowledges what these alternatives expose: a time made only of isolated instants cannot explain continuity, and the present cannot be understood without its relation to what has been. But it argues that continuity itself needs an account of its cohesive power. A continuum cannot simply be declared to hold together; the unity that makes it a continuum must also be explained.

Here Immanuel Kant’s emphasis on synthesis retains force. Against Henri Bergson’s duration, the text argues that an organized multiplicity presupposes an organizing act; the past cannot simply penetrate the present as a given feature of duration. If the past is inactive, it will remain behind unless a present being exists in it in an ecstatic way. The question is therefore not settled by choosing either static instants or an already cohesive flow. Time must be understood as both a dissolving force and the center of a unifying act, a unity that already bears the possibility of its own dissociation.

The same issue appears in the analysis of change. A permanent subject cannot explain change merely by remaining underneath it: the unity of what persists and what changes must be a unity of being, in which the permanent is itself what changes. This unity is described as ecstatic and referred to the For-itself, rather than supplied by a timeless foundation. Immanuel Kant’s work is thus treated neither as a simple error nor as a final solution. Its demand for unity identifies a real problem, while the book’s criticism is that formal synthesis does not yet explain the temporal being of the terms it unifies.

Other Minds and the Limits of Kantian Subjectivity

The book also examines whether a Kantian account can establish the experience of other people. It argues that Immanuel Kant’s concern with universal laws of subjectivity leaves the particularity and multiplicity of persons unresolved. A universal subject is not the same as a concrete person, and a general essence cannot determine the distinct existence of individual consciousnesses. Yet the Other is encountered in experience as a particular kind of object, so a critical philosophy must ask how such an experience is possible.

The difficulty becomes acute when another person’s expression is considered. Anger felt by another and a furious expression perceived by an observer are distinct phenomena. Ordinary experience may treat the redness of Paul’s face as an effect of his anger, but Kantian causality is supposed to unify appearances within one experience. It is unclear how that principle could connect phenomena belonging to two different consciousnesses, or how an instant in one person’s time could stand in succession or simultaneity with an instant in another’s. A shared temporal structure does not make the times of distinct subjects communicate.

For that reason, the Kantian Other is judged insufficient as an account of an actual relation between consciousnesses. The Other risks becoming a regulative “as if”: a hypothesis that helps organize experience but cannot, on this account, be thought without contradiction as an independent subject whose experience is inaccessible. This is not simply a question of discovering another object within one person’s system of representations. The Other refers to experiences that are in principle outside that system, and the problem is how such an exteriority can be genuinely present rather than merely postulated.

The comparison with Edmund Husserl extends, rather than removes, the objection. Edmund Husserl makes the Other a condition of the world’s unity and richness: objects are experienced as referred to a plurality of consciousnesses, and the empirical self is no more privileged than the empirical selves of others. But the book argues that this account retains a transcendental subject and continues to connect self and Other through knowledge. The existence of the Other may be affirmed as sure as the world, yet the certainty is no stronger than the knowledge by which the world itself is measured. Immanuel Kant consequently remains part of a wider critique: a universal framework of knowing can indicate the problem of other minds, but cannot, by itself, secure the lived relation between them.