Logic

Critique of Practical Reason (Kritik der praktischen Vernunft)

Some Thoughts Concerning Education

What the Tortoise Said to Achilles

Chance, Love, and Logic

Hegel's Realm of Shadows

Introduction to Logic

Prolegomena to the Study of Hegel's Philosophy, and Especially of His Logic

Conceptual Harmonies

The Art of Philosophizing

Of the Conduct of the Understanding

The Essays of Arthur Schopenhauer; the Art of Controversy

A Philosophical Essay on Probabilities

Organon — Prior Analytics