A textbook written specially for the UPSC Mains General Studies Paper-IV, Ethics, Integrity and Aptitude provides systematic guidance to students preparing for Civil Services examinations by presenting comprehensive material on the topic of ethics, integrity and aptitude. The authors give a detailed account of the various principles of ethics and covers topics such as: ethics and its dimensions, and human values; lessons from the lives of great leaders ; attitude and aptitude;foundational values for civil servants and ethics in public administration; ethical and moral values in governance;ethics in international relations, and corporate governance and public service. The book contains questions from previous years’ UPSC exams at the end of each chapter, as well as solved and unsolved case studies from the last ten years’ UPSC Civil Services Mains Examinations (2013–23). In addition, the book includes a few sample case studies with solutions, which are based on the authors’ knowledge of philosophy and administrative experience. Written in a simple and lucid language, this comprehensive study of ethics will help aspirants prepare better for the civil services examinations.