In "A Handbook of Ethical Theory," George Stuart Fullerton provides a comprehensive exploration of moral philosophy, examining foundational concepts such as utilitarianism, deontology, and virtue ethics. Fullerton's literary style is both analytical and accessible, employing rigorous reasoning and clarity to navigate complex ethical dilemmas. This work is situated in the 20th-century resurgence of interest in ethical studies, engaging with both classical philosophical texts and contemporary moral issues, making it an essential resource for students and scholars alike. Fullerton, an esteemed philosopher and educator, was deeply influenced by the philosophical debates of his time, particularly the shifts in moral reasoning during the late 19th and early 20th centuries. His academic background, including a considerable tenure at Columbia University, underpinning his commitment to synthesizing ethical theory with practical application, informs this handbook. Fullerton's approach reflects his belief that understanding ethics is crucial for both individual and societal flourishing, a perspective shaped by both his scholarly pursuits and personal convictions. "A Handbook of Ethical Theory" is highly recommended for anyone seeking to deepen their understanding of ethical frameworks and their application in real-world scenarios. Fullerton's thorough and thoughtful analysis provides invaluable perspectives for students, educators, and practitioners alike, inviting readers to engage critically with their own moral reasoning and the ethical challenges of contemporary life.