"Now, to take that which has caused us to create the world, and include it within the world we have created, is clearly impossible. That is why Quality cannot be defined. If we do define it we are defining something less than Quality itself." - Robert Pirsig, Zen and the Art of Motorcycle Maintenance

Replace the word Quality with substrate consciousness, or potential, or buddha-nature, and you get the same thing we been discussing here for a while now.