Mr. Balfour himself says, “The primary signification of Tao is simply ‘road.’ ” Beyond question this meaning underlies the use of it by the great master of Taoism and by Chuang-tzŭ . 16 Let the reader refer to the version of the twenty-fifth chapter of Lao’s treatise, and to the notes subjoined to it. There Tao appears as the spontaneously operating cause of all movement in the phenomena of the universe; and the nearest the writer can come to a name for it is “the Great Tao .” Having established this name, he subsequently uses it repeatedly; see chh. xxxiv