Chapter 27, Part 1A - Chuang Tzu

Imputed words make up nine tenths of it; repeated words make up seven tenths of it; goblet words come forth day after day, harmonizing things in the Heavenly Equality.

These imputed words which make up nine tenths of it are like persons brought in from outside for the purpose of exposition. A father does not act as go-between for his own son because the praises of the father would not be as effective as the praises of an outsider. It is the fault of other men, not mine [that I must resort to such a device, for if I were to speak in my own words], then men would respond only to what agrees with their own views and reject what does not, would pronounce "right" what agrees with their own views and "wrong" what does not.
~ Burton Watson translation via Terebess Asia Online ~

Go here to read the introductory post to the chapters of the Book of Chuang Tzu.