Epistemology is the branch of philosophy that studies the nature, origin, and limits of knowledge. It seeks to answer fundamental questions about what knowledge is, how it is acquired, and how we can differentiate between true belief and opinion. Key figures in this field include Plato and Descartes, who have shaped our understanding of knowledge through their philosophical inquiries. In epistemology, concepts such as justification, belief, and truth are critically examined. Theories like Empiricism and Rationalism offer different perspectives on how knowledge is obtained, emphasizing the roles of experience and reason, respectively. This exploration helps us understand the complexities of human cognition and the foundations of our beliefs.