"A Treatise of Human Nature" is a philosophical work by David Hume, published in the 18th century. It explores the nature of human understanding, emotions, and morality, aiming to establish a science of human behavior. Hume argues that human knowledge is rooted in experience and that our beliefs are shaped by habits and feelings rather than rational thought. The treatise is divided into three main sections: Cognition, which examines how we perceive and understand the world; Passions, which discusses emotions and their influence on behavior; and Morality, which analyzes the basis of ethical judgments. Hume's ideas have significantly impacted modern philosophy and psychology.