When I was a child in elementary school, people often asked me, “What is your favorite subject?” Invariably my response was one of two things. I either said, “recess” or “gym.” My answer revealed my deepest predilections. I preferred play to work. Indeed, my nascent philosophical musing regarding the cosmic “Why?” questions took place as I made a game of walking to school via tiptoeing along a long path, pretending I was a high-wire walker in a circus. I asked myself the meaning of life wherein I had to spend five days a week doing what I didn’t want to...