This document summarizes a lecture on thinking and thought. It discusses how thinking allows humans to make sense of and interpret the world to accomplish goals, though there is no consensus on how to define thinking. Thinking can refer to both the act of producing thoughts and the process of producing thoughts. Thought underlies many human actions and has been studied by various academic fields, though there is also no agreed-upon definition of thought. The document concludes with several quotes on topics relating to thinking, learning, wisdom and the mind.