“Wabi-sabi can be called a ‘comprehensive’ aesthetic system.  Its world view, or universe, is self-referential.  It provides an integrated approach to the ultimate nature of existence (metaphysics), sacred knowledge (spirituality), emotional well-being (state of mind), behavior (morality), and the look and feel of things (materiality).  The more systematic and clearly defined the components of an aesthetic system are- the more conceptual handles, the more ways it refers back to fundamentals- the more useful it is.” ~ Leonard Koren