The thirty spokes unite in the one nave; but it is on the empty space (for the axle), that the use of the wheel depends. Clay is fashioned into vessels; but it is on their empty hollowness, that their use depends. The door and windows are cut out (from the walls) to form an apartment; but it is on the empty space (within), that its use depends. Therefore, what has a (positive) existence serves for profitable adaptation, and what has not that for (actual) usefulness.
About the text, translation & sources
The Chinese text follows our sister site, Longhu Mountain. The English is James Legge’s public-domain translation, first published in 1891, transcribed from the Project Gutenberg edition. Paragraph numbering is omitted; wording, parenthetical explanations and period language are retained. Chinese readings vary between editions.
The Tao Te Ching is traditionally attributed to Laozi. Its date and authorship are debated. Chapter titles are reading aids; they are not part of the ancient Chinese chapter text. The reflection boxes on this site are contemporary editorial questions, distinct from the translation.