The body would thus be not the cause of our thinking, but merely a condition restrictive thereof, and, although essential to our sensuous and animal consciousness, it may be regarded as an impeder of our pure spiritual life " (Kritik der reinen Vernunft, and ed., p. 809).
Of the earlier encyclopaedias we may notice the famous HandwOrterbuch der reinen and angewandten Chemie, edited by Liebig; Fremy's Encyclopedie de chimie, Wurtz's Dictionnaire de chimie pure et applique'e, Watts' Dictionary of Chemistry, and Ladenburg's HandwOrterbuch der Chemie.
Frege's earlier works, Begriffsschrift, eine der arithmetischen nachgebildete Formelsprache des reinen Denkens (Halle, 1879), and Die Grundlagen der Arithmetik (Breslau, 1884); also cf.
The Kritik der reinen Vernunft), as distinguished from the "Practical Reason" (praktische Vernunft) which is specially concerned with the performance of particular actions.
In 1832 he founded the Annalen der Pharmazie, which became the Annalen der Chemie and Pharmazie in 1840 when Wailer became joint-editor with himself, and in 1837 with W6hler and Poggendorff he established the Handworterbuch der reinen and angewandten Chemie.
His chief works are Philosophie als Denken der Welt gem[iss dem Princip des kleinsten Kraftmasses (1876) and the Kritik der reinen Erfahrung (1888-1890).
Reinen Erfahrung (1900).
Reinen Vernunft in which Kant discusses the impossibility of applying to "things-in-themselves" the principles which are found to govern phenomena.
Reinen Vernunft, p. 197 (ed.
In his first philosophical treatise, Philosophie als Denken der Welt gemdss dem Princip des kleinsten Kraftmaasses, Prolegomena zu einer Kritik der reinen Erfahrung (1876), he based his views on the principle of least action, contending that, as in Nature the force which produces a change is the least that can be, so in mind belief tends in the easiest direction.
Afterwards, in his Kritik der reinen Erfahrung (1888-1890), Avenarius aimed at giving a description of pure experience which he identified with the natural view of the world held by all unprejudiced persons.
He assisted Liebig and Poggendorff in the Handworterbuch der reinen and angewandten Chemie, and was jointeditor with Liebig of the Annalen der Chemie and Pharmacie.
In language, which he appears to regard as somehow acquired, he finds a solution for the problems of reason which Kant had discussed in the Kritik der reinen Vernunft.