Professor Minsky continues to develop the theory of human thinking and learning called the "Society of Mind," which tries to explain how various phenomena of mind emerge from the interactions among many different kinds of highly evolved brain mechanisms. In this way we can account for many aspects of common sense, imagination, and reasoning by analogy, as resulting from negotiations among systems that use different ways of representing knowledge. Similarly, it appears that we can explain many of the regularities found in natural languages as consequences of how those representations work, rather than as constraints that are externally imposed on interpersonal communications. This approach also suggests that some of what we call "emotions" are mechanisms required for managing conflicts among competing goals. We may need to construct similar systems when we begin to build smarter and more versatile machines.