Logic

Forallx – An Introduction to Formal Logic

Thinking as a Science

Organon

Of the Conduct of the Understanding

Categories (Κατηγορίαι)

Organon — Prior Analytics

Deductive Logic

A Logic of Facts; Or, Every-day Reasoning

The Essays of Arthur Schopenhauer; the Art of Controversy

Studies in Logical Theory

Tractatus Logico-Philosophicus

The Categories

Logic as the Science of the Pure Concept

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

Chance, Love, and Logic

Essays in Rationalism

John Dewey's logical theory

Logic Taught by Love

The Essays of Arthur Schopenhauer; the Art of Controversy

Superstition In All Ages