Kōan

A kōan (公案) is a short story, question, or statement from the Chan and Zen Buddhist traditions used as a focus for meditation. Famous examples — 'What is the sound of one hand?', 'Show me your original face before your parents were born' — are quoted so widely that they now appear in secular writing on creativity, therapy, and leadership. In their original setting, kōans are not riddles to be solved; they are prompts that dismantle the habits of ordinary reasoning so that a different kind of understanding can arise.

As quotations, kōans have an unusual property: they are engineered to be difficult to quote well. The line 'What is the sound of one hand clapping?' loses most of its work if pulled into an inspirational graphic; the original teaching depends on being sat with, sometimes for years. When kōans are used casually as clever epigrams, they lose their teeth. Quoters who care about the tradition tend to introduce a kōan with a note that this is a meditation prompt, not a quip.

When quoting a kōan in secular writing, name the collection where it appears (the Blue Cliff Record, the Gateless Gate) and, if possible, the translator. Kōans arrive in English through several distinct translation lineages, and small wording differences carry theological freight for practitioners. If you cannot find the source, treat the line as a paraphrase or an allusion, not a citation.