Last Tuesday, Melissa Mulder, a Pennsylvania kindergarten teacher, took her class beyond the normal elementary schoolroom Valentine’s Day card swap. She brought each student into the hall one by one and asked, “What is love?” According to her, many of the students “shrugged their shoulders,” “shuffled,” “stared dumbfounded,” and nearly all of them “struggled to define love without using the actual word.” No big surprise, right? It’s a tough question for a kindergartner. For a