This critical thinking guide introduces concepts and strategies for developing essential reasoning skills and intellectual character. As students advance in their academic studies and encounter new situations in their lives, they must learn to differentiate fact from fiction and make decisions based in good reasoning. They must learn to be clear, accurate, relevant, logical, and fair when expressing ideas. The Aspiring Thinker's Guide to Critical Thinking lays out a clear framework for guiding this development and encouraging lifelong intellectual curiosity. As part of the Thinker's Guide Library, this book advances the mission of the Foundation for Critical Thinking to promote fairminded critical societies through cultivating essential intellectual abilities and virtues across every field of study across world.