Chapter twenty is unlike anything else in the book. It abandons the impersonal voice, and a speaker appears who is miserable.
Everyone else is cheerful, as if at a great feast or climbing a terrace in spring. I alone am unmoved, without any sign, like an infant that has not yet smiled, listless, with nowhere to go home to. Everyone else has more than enough; I alone seem to have lost everything. Mine is the mind of a fool, muddled. Ordinary people are bright, I am dim; ordinary people are sharp, I am dull. I am drifting like the sea, blown about with nowhere to stop. Everyone else has something to do; I alone am obstinate and boorish.
The passage has no parallel in the rest of the text. Everywhere else the sage's position is presented as an advantage, sometimes a concealed one, and here it is presented from inside as isolation and loss without any compensation offered until the last line.
It also has no obvious philosophical work to do. It argues nothing, states no principle, and gives no instruction. What it does is show the cost of a position the book recommends throughout, which is a kind of honesty the rest of the text does not attempt.
Readers have taken it as autobiography, as a persona, as satire on the pretensions of the withdrawn, and as the most sincere thing in the book. It supports all four.