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  逻辑学的主题是清晰高效的思考，它既是一门科学，也是一门艺术，这本书的目的是向读者介绍逻辑学的基本原理和技巧。 这本书既没有刻板的理论论述也不是正规的教科书，这是一本现实应用的指南，对那些初次接触逻辑的人介绍逻辑的基本原理。简单的逻辑学期待造就实践者，而不是理论家。(Logic' s theme is clear and efficient thinking, it is both a science and an art, this book is intended to introduce the reader to the basic principles of logic and skill. This book discusses the theory neither rigid nor is a regular textbook, it is a guide to real-world applications, for those initial contacts logical person in the basic principles of logic. Simple logic makes practice expectations, rather than theorists.)