Why Learn Logic?
Learning Logic brings students one step closer to a life of wisdom. Logic students learn the standards of proper reasoning, standards which help them to construct valid arguments and to identify and refute invalid ones. They learn specific skills of thinking clearly, such as how to define terms and detect fallacies. Logic teaches students to be masters of words in their intellects, rather than prey to words in their emotions.

Our Logic texts cover all the foundations of fundamental deductive logic, including the more powerful and flexible branch of modern logic called propositional or symbolic logic. The lessons are arranged progressively, unfolding in a logical manner. Introductory Logic teaches students how to define and relate terms, how to determine the truth of statements, how to analyze syllogisms for validity (including syllogisms in normal English), how to construct a sound argument to establish a conclusion, and how to detect and expose fallacies, both formal and informal. Intermediate Logic builds from this, teaching students how to analyze propositional arguments by means of two powerful tools, truth tables and truth trees, and how to write formal deductive proofs. Consequently, students learn not only how to work with categorical syllogisms, but with all forms of basic deductive arguments.