Epistemology is the branch of philosophy that examines the nature, sources, limits, and criteria of knowledge, exploring how we acquire it and how we distinguish truth from falsehood.Epistemology is the branch of philosophy that explores the nature, scope, and limits of knowledge. It addresses questions such as what constitutes knowledge, how we distinguish knowledge from mere belief or opinion, and the sources and methods through which knowledge is acquired, including perception, reason, intuition, and experience.