creative moments when they were so consumed by what they were doing, or were so relaxed and at ease, that they seemed to enter an altered state of consciousness. These experiences generally fall into two categories. The first of these are the so-called peak experiences, what we think of as transcendent moments, when we attain a state of being that we associate with monks and mystics. Compared to those highly spiritual events, the others may be more mundane, ordinary, and prosaic—but that doesn’t mean that they are any less important.