[Music] Hello. I'm happy to be here with you today to talk about happiness. Do you ever ask yourself exactly what it is and how we define it and the ways in which we express it? I do. I think about it at a personal level. I think about it at a professional level when I talk to my students about ancient Greek philosophy. And I've been talk and I've been thinking about it even more lately as a result of preparing for this talk. In many ways, what is happiness really is a timeless question. It's been analyzed, ...