Unsurpassed for its clarity and comprehensiveness, A CONCISE INTRODUCTION TO LOGIC has established itself as the standard for introductory logic texts. In this Tenth Edition, Hurley continues to build upon the tradition of lucid, focused, and accessible presentations of logic's basic topics - both formal and informal. This edition also augments the book's successful technology integration with an updated and enhanced version of CengageNOW, which now includes Learning Logic tutorials, video clips, and the complete text in eBook format. In response to market feedback and the success of Wadsworth's Logical Choice custom program, this text has been reformatted to provide additional flexibility to customize your course material content. Wadsworth is a part of Cengage Learning. Finally, innovative new tools including a PowerLecture presentation tool and a Community Website are designed to help you manage, create, and teach your course more efficiently and effectively.