In this groundbreaking philosophical treatise, John Stuart Mill presents a compelling defense of one of the most influential ethical theories in modern thought: utilitarianism. Building on the ideas of his predecessor Jeremy Bentham, Mill refines and expands the concept of utility, arguing that human happiness and the greatest good for the greatest number should be the guiding principles of moral decision-making. Through clear and persuasive prose, Mill addresses the criticisms leveled against utilitarianism, including its alleged disregard for justice and individual rights. He introduces the notion of higher and lower pleasures, emphasizing that intellectual and moral satisfaction hold more intrinsic value than mere physical gratification. With keen insight and rigorous reasoning, Mill demonstrates how utilitarian ethics can be applied to both personal and social contexts, advocating for a society rooted in compassion and rational thought. A timeless and thought-provoking work, Utilitarianism challenges readers to rethink the foundations of morality and the role of human happiness in shaping a just and ethical world. Ideal for students of philosophy, ethics, and political theory, as well as anyone interested in the moral questions that continue to shape our modern world.