"The Methods of Ethics" is a philosophical work by Henry Sidgwick that explores various approaches to ethical reasoning. Sidgwick examines the principles of utilitarianism, intuitionism, and egoism, analyzing how each method addresses moral dilemmas and the pursuit of the good life. In this book, Sidgwick argues for a rational basis for ethics, emphasizing the importance of reason in moral decision-making. He seeks to reconcile conflicting ethical theories and provides a framework for understanding how individuals can navigate complex moral situations while striving for both personal and collective well-being.