This paper examines the philosophical concept of the "loss of the subject," a theme frequently associated with modern movements such as structuralism. The author contends that this claim is misleading and theoretically belated. The traditional understanding of the subject as a "substance" was already undermined during the era of German Romantic philosophy, influenced by Leibniz. Therefore, the core of the issue is not the actual disappearance of the subject, but rather the rejection of its substantial and metaphysical nature. This shift radically transforms the entire philosophical landscape: the subject can no longer be viewed as an object, but must be understood as a "non-object." Such a transition necessitates a profound revision of Western thought, which has historically been rooted in objectification. Rather than speaking of a loss, it is more accurate to describe this as the discovery of the subject in a non-objective sense. The text emphasizes that conceptualizing the subject outside the categories of objectivity poses a fundamental challenge to future philosophical inquiry, requiring the abandonment of traditional substantial metaphysics in favor of a new understanding of existence.