An Introduction to Philosophical Logic has been a popular mainstay among students taking courses in philosophical logic and the philosophy of language since it was first published in 1982. Covering some of the most central topics in philosophy - the proposition, theories of truth, existence, meaning and reference, realism and anti-realism - it aims to be an accessible guide to the topic. This new edition keeps the same successful format, with each chapter as a self-contained introduction to the topic it discusses, but has been rewritten to include updated information. The author has also included a new chapter on identity, has revised his concluding comments and has completely updated the bibliography.