""Logic Or The Art Of Thinking: Being The Port-Royal Logic"" is a book written by Thomas Spencer Baynes in 1850. The book is a comprehensive guide to logic and the art of thinking, based on the teachings of the Port-Royal Abbey in France. The Port-Royal Logic is known for its rigorous approach to reasoning and its emphasis on clarity and precision in thought. Baynes' book covers topics such as the nature of logic, the principles of reasoning, the structure of arguments, and the use of language in logical discourse. The book is aimed at students of philosophy and anyone interested in developing their critical thinking skills. It is a valuable resource for anyone seeking to improve their ability to reason and communicate effectively.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.