Inventing Knowledge: A Global & Historical Introduction to Philosophy is an open educational resource (OER) textbook designed for a cross-cultural historical-survey style Introduction to Philosophy course. While it was written with an undergraduate academic audience in mind, it should also be suitable for self-guided readers interested in philosophy. It covers 'western' philosophy from the Presocratics of Ancient Greece through to the present day (and including the Islamic world). It also contains additional chapters on philosophy in India, China, Mesoamerica, and Africa. The text touches on issues concerning, but not limited to, metaphysics, epistemology, ethics, political philosophy, philosophy of religion, and aesthetics. Upon working through the material covered here, students should be able to identify and discuss many of the central figures, concepts, problems, theories, and schools of philosophy across history and across the world.