“Living Structure” is the name that he how gives to the Quality Without A Name.
Natural systems, or systems that evolve on their own, all have these 15 properties to some degree.
Levels of scale: a tree's trunk, main branches, small branches, tiny branches, leaves, a leaf's nerves.
Positive space: (a term from graphic design) it is convex, enclosed, and has a definite shape.
Good shape: a bird's beak or a wing, a ship's sail – they attain the optimal shape naturally.