Scholars hold diverse opinions on the identity and origin of Korean philosophy. Although some trace the origin back to antiquity when the mythical figure Dangun supposedly founded the country in 2333 BCE, there is little historical evidence to support it. It is more plausible to estimate that philosophy began in Korea during the Three Kingdom era (second century CE) when people unfettered themselves from myths, legends, and shamanist beliefs of the tribes, and began to think in more general and philosophical terms. During this period Buddhism, a systematic and conceptually advanced religion, was introduced into the Three Kingdoms (Shilla, Baekje, and Koguryo), all of which embraced it to serve as a social and spiritual foundation for a trans-tribal ethical system. After its introduction, Korean Buddhism went through diverse phases of changes and developments, sometimes as a result of adaptations to changing social and political environments and sometimes...