practice within societies. The opening of this volume presents an extensive preface that outlines Lecky's perspective on moral history. He identifies the essential questions regarding moral changes over time, emphasizing the importance of understanding both the theoretical ideals of morality and their practical realization among the populace. He discusses the natural history of morals, the contentious debates within moral philosophy, and the significant influences of different schools of thought, such as utilitarianism and intuitionism, on society's moral framework. The foundation of his inquiry sets the stage for a detailed examination of how these moral principles were manifested during the periods and societies he will analyze. (This is an automatically generated summary.)