The document provides an introduction to philosophy, defining it as the study of reality, existence, knowledge, values, reason, mind and language. It outlines some of the main philosophical questions debated in different branches of philosophy, including metaphysics, epistemology, logic and axiology. Metaphysics examines concepts like existence, time, causation and the relationship between mind and body. Epistemology studies the nature of knowledge, truth and justification. Logic analyzes principles of reasoning and argumentation. Axiology includes ethics, aesthetics and political philosophy which study values, beauty and justice. The document contrasts the methods of philosophy and science.