In his 1991 book, "Hippies and American Values", Timothy Miller described the hippie ethos as essentially a "religious movement" whose goal was to transcend the limitations of mainstream religious institutions. "Like many dissenting religions, the hippies were enormously hostile to the religious institutions of the dominant culture, and they tried to find new and adequate ways to do the tasks the dominant religions failed to perform." In his seminal, contemporaneous work, "The Hippie Trip", author Lewis Yablonsky notes that those who were most respected in hippie settings were the spiritual leaders, the so-called "high priests" who emerged during that era.