• Intended for a course for students in philosophy, mathematics, linguistics, or computer science, and excellent for self-study.  

• Motivation is given for each formal concept and each step in building a formal logic in terms of formalizing reasoning.  Summaries are given at important junctures in the book to keep students aware of what they are doing and where they are going.

• Criteria of formalization are developed and applied to formalizing ordinary language reasoning in an example-analysis format.

• More than 300 worked examples.

• More than 500 exercises with answers available on the web.