"The Science of Being Great" by Wallace D. Wattles is a book that explores the principles and strategies for achieving personal greatness. Wattles, known for his focus on New Thought philosophy, argues that the path to greatness is not only dependent on talent or circumstance, but is accessible to all through the conscious development of certain qualities and attitudes.

The book addresses issues such as the importance of self-confidence, clarity of vision, and focused action. Wattles emphasizes the relevance of thinking big and acting in alignment with those thoughts. He argues that greatness is a matter of mindset and attitude as much as it is a matter of skill.

In addition, Wattles offers practical advice on how to cultivate a mindset of greatness, including the development of leadership skills, the importance of personal integrity and ethics, and how to overcome self-imposed limitations. The book is a blend of practical and spiritual philosophy, with a focus on self-development and self-improvement.