In this third installment of our series on the art of being human, we discuss the end (or purpose) of medicine. What should medicine aim to do? What does it mean to be a healthy human person? We also answer a listener question about science and the space race, and talk about why we're not gnostic. If you like this episode, be sure to read Leon Kass' 1975 article, "Regarding the End of Medicine and the Pursuit of Health."