About this Book

"An excellent introduction to logic."
J. Aultman-Moore, Waynesburg College

"Gensler's book is easy to read, his examples are very clear, his points made very simply. Gensler has the rare ability to find a simpler path to profound matters. Introduction to Logic clearly guides students to grasp complex logical/ philosophical points...He assists students by presenting easily-remembered strategies for the clear application of the book's rules. His style encourages students' confidence both in understanding the issues involved and in their ability to work out complex problems."
Thomas R. Foster, Ball State University

"Gensler's system is clear and straightforward. He presents his material in such a way that students feel encouraged as they grow their ability to perform logical operation. If ever a logic book deserved the attribute user-'friendly' then this is the one."
Winfried Corduan, Taylor University

Introduction to Logic is a clear, interesting, and accessible introduction to what has long been considered one of the most challenging subjects in philosophy. Harry Gensler engages students through practical examples and important philosophical arguments, making the book ideal for anyone coming to logic for the first time. Using simpler and manageable methods for testing arguments, students are led through in a careful step-by-step way to master the complexities of logic.

Introduction to Logic contains many exercises, samples and study aids, including boxes for important ideas and a glossary. The book covers a wide range of formal and informal areas, making it suitable for either basic or intermediate logic courses. The star test for syllogisms that Gensler offers is much simpler than other rules, and an easier way to do proofs. The companion LogiCola instructional program and various teaching aids (including a teachers manual) are available on this site.