| − | A '''koan''' is a teaching riddle used in the [[Zen Buddhism|Zen]] (also known as ''Ch'an'') [[Buddhism|Buddhist]] tradition. Probably the most universally recognized example of a koan is: "What is the sound of one hand clapping?", commonly attributed to the Buddhist teacher Hakuin Ekaku. | + | A '''koan''' is a teaching riddle used in the [[Zen Buddhism|Zen]] [[Buddhism|Buddhist]] tradition, primarily that of the Rinzai school. Koans are unresolvable via conventional intellectual reasoning. "Sitting with" (meditating on) a koan, a student tries to break through rational, dualistic thinking to appreciate the true nature of the self and the universe. |
| | + | The first koan many students encounter is known as ''Mu''. A Zen master was posed the question, "Does a dog have Buddha-nature or not?", to which the master replied, "Mu" (not). This answer is a conundrum because the Buddha is reputed to have said that all beings have Buddha-nature. |