Thirty spokes converge upon a single hub It is the hole in the centre that the purpose of the axle depends. We make a vessel from a lump of clay It is the empty space within the vessel that makes it useful. We make doors and windows for a room. But it is the those empty spaces that make the room habitable. Thus while the tangible has advantages It is the intangible that makes it useful.

What It Means

This is a placeholder explanation generated by the low-overhead model. It interprets "Thirty spokes converge upon a single hub It is the hole in the centre that the purpose of the axle depends. We make a vessel from a lump of clay It is the empty space within the vessel that makes it useful. We make doors and windows for a room. But it is the those empty spaces that make the room habitable. Thus while the tangible has advantages It is the intangible that makes it useful." in the context of "Laozi, Tao Te Ching (ca. late 4th cent. BC) #11, as quoted by Steven Groak, The Idea of Building (1992)" to mean that wisdom is timeless.