Le Corbusier On Mastery

Le Corbusier's description here is of Mastery in Architecture.

Mastery materialised in design creates some additional something that cannot be described.

'work reaches a maximum of intensity, when it has been made with the best quality of execution, when it has reached perfection ... When this happens the places start to radiate. They radiate in a physical way and determine what I call 'ineffable space', that is to say, a space that does not depend on dimensions but on the quality of its perfection.

It belongs to the dominion of the ineffable, of that which cannot be said'.