Chapter 19, Part 13 - Chuang Tzu

You forget your feet when the shoes are comfortable. You forget your waist when the belt is comfortable. Understanding forgets right and wrong when the mind is comfortable. There is no change in what is inside, no following what is outside, when the adjustment to events is comfortable. You begin with what is comfortable and never experience what is uncomfortable when you know the comfort of forgetting what is comfortable.
~ Burton Watson translation via Terebess Asia Online ~

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