This document provides an overview of the moral theory of utilitarianism as developed by Jeremy Bentham and John Stuart Mill. It discusses key concepts of utilitarianism like consequentialism, hedonism, and the principle of utility. It covers Bentham's formulation focusing on pleasure and pain, and Mill's adjustments regarding the quality of happiness. The document also examines criticisms of utilitarianism and Mill's responses regarding issues like the compatibility of rights and utility.