Logic

How to Reason + Reasoning in the Sciences

Peirce's Cosmology

Essays on Some Unsettled Questions of Political Economy

The Essentials of Logic, Being Ten Lectures on Judgment and Inference

Critique of Practical Reason (Kritik der praktischen Vernunft)

Organon — Prior Analytics

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 Chattering Mind

The Art of Philosophizing

Of the Conduct of the Understanding

The Essays of Arthur Schopenhauer; the Art of Controversy