The collection presents essays that examine Zen as a practice and philosophy, treating enlightenment and ignorance, the experience of satori, and the historical development of Zen thought. It outlines practical methods of instruction, the organization and ideals of communal meditation, and interpretations of symbolic stages of practice represented in the cow-herding pictures. Interspersed are reflections on Zen's psychological implications and guidance for applying insight in daily life, accompanied by explanatory notes and an appendix. The tone balances descriptive history, philosophical analysis, and practical guidance aimed at making Zen intelligible to readers approaching it from modern perspectives.