In this book, Scott Soames illuminates the notion of truth and the role it plays in our ordinary thought, as well as in our logical, philosophical, and scientific theories. The main questions investigated include "Why do we need a truth predicate at all?", "What theoretical tasks does it allow us to accomplish?", and "How must we understand the content of any predicate capable of accomplishing these tasks?". The main aim of the book is to integrate and extend the most important insight on truth from a variety of sources.