This metaphysical exposition of a subject matter which not only itself, but in its determinations, seemed to belong to experience is remarkable in part because, as a conceptual experiment, it gave at least the impetus for the modern philosophy of nature (a philosophy which does not make nature the foundation of science as something given to perception through the senses but discerns its determinations in the absolute concept); in part also because that Kantian construction is still deeply entrenched and held as a philosophical beginning and the foundation of physics.