Time alone is the gift of self-entertainment—and that is the font of creativity. Because there is nothing better to spur creativity than a blank page or an empty bedroom. I have fond memories of pretending ninjas were going to come into every room of the house and thinking to myself, What is the best move to defend myself? How will I “Home Alone” these ninjas? I was learning to create incredible flights of fancy.

LIN-MANUEL MIRANDA