The Problems of Philosophy (1912) is a concise and accessible introduction to philosophical thought by British philosopher Bertrand Russell. In this classic work, Russell explores fundamental questions about the nature of knowledge, reality, and truth. He discusses key philosophical concepts such as appearance versus reality, the limits of human knowledge, the role of sense data, and the existence of the external world. Russell also examines the contributions of major philosophers like Plato, Descartes, and Hume, making the book an ideal starting point for anyone new to philosophy.