In the history of Chinese literature, Zen writings known as _Yü-lu_ (Goroku) form a class by themselves, and it is due to them that the Chinese colloquialism of the T‘ang and the early Sung dynasty has been preserved. Men of letters in China despised to write except in classical style, deliberately choosing such words, phrases, and expressions as enhanced the grace of the composition. All the literature we have of those early days of Chinese culture therefore is the model of such a cultivated style. The Zen masters were not necessarily despisers of classicism, they took to fine literature as much as their contemporaries, they were well-educated and learned too; but they found colloquialism a better and more powerful medium for the utterance of their inner experiences. This is generally the case with spiritual reformers, who want to express themselves through the medium most intimate to their feelings and best suited for their original ways of viewing things. They avoid wherever possible such nomenclature as has been in use and filled with old associations which are apt to lack in living purposes and therefore in vivifying effects. Living experiences ought to be told in a living language and not in worn-out images and concepts. The Zen masters therefore did what they could not help doing and made free use of the living words and phrases of the day. Does this not prove that in China Buddhism through Zen ceased to be a foreign importation and was transformed into an original creation of the native mind? And just because Zen could turn itself into a native product, it survived all the other schools of Buddhism. In other words, Zen was the only form in which the Chinese mind could accommodate, appreciate, and assimilate the Buddhist doctrine of Enlightenment. * * * * *