Chapter 2, Part 2B - Lieh Tzu

'Right and wrong, profit and loss, are the fixed principles prevailing in the world of sense. To let the mind reflect on what it will, to let the lips utter what they please, and not grudgingly bottle it up in one's breast, so that the internal and the external may become as one, is still not so good as passing beyond the bounds of self and abstaining from all manifestation. This first step, however, pleased the Master and caused him to give a smile.

'At the end of seven years, there was another change. I let my mind reflect on what it would, but it no longer occupied itself with right and wrong. I let my lips utter whatsoever they pleased, but they no longer spoke of profit and loss. Then, at last, my Master led me in to sit on the mat beside him.

'The question is, how to bring the mind into a state of calm, in which there is no thinking or mental activity; how to keep the lips silent, with only natural inhalation and exhalation going on. If you give yourself up to mental perfection, right and wrong will cease to exist; if the lips follow their natural law they know not profit or loss. Their ways agreeing, Master and friend sat side by side with him on the same seat. That was only as it should be.
~ Lionel Giles translation via Terebess Asia Online ~

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