System of Transcendental Idealism

...has, therefore, to the extent that—if one only admits theoretical evidence—it can never possess that clarity of evidence of which natural science; the empirical study of the physical world (Naturwissenschaft) is capable, whose foundations as well as proofs are entirely and thoroughly theoretical.

From these explanations, those readers who are familiar with the Philosophy of Nature; "Naturphilosophie," a movement viewing nature as a living, self-organizing whole (Natur-Philosophie) will also draw the conclusion; (Schluss) that there is a reason, lying quite deep within the matter itself, why the author has contrasted this science with Transcendental Philosophy; the study of the mind's necessary conditions for experience (Transscendental-Philosophie) and has separated it entirely from it. This is because, certainly, if our only task were merely to explain nature, we would never have been driven toward Idealism; the philosophy that reality is fundamentally shaped by the mind (Idealismus).

Now, as for the deductions; logical derivations of principles from fundamental concepts (Deductionen) that have been conducted in the present work regarding the primary objects of nature—matter; the physical substance of the world (Materie) in general and its universal functions, the organism; a living, self-regulating system (Organismus), and so on—