The highest regarded possession one can acquire for practicing zen, I think, is nothingness. Nothingness does not means nothing. Nothingness means the realization that the proccess of identification of beings, things and events is always generated and generates delusion. The Universe in the way one experiences is always delusion. The identity we find on things and the way we identify things are actually an imposition of our perception as an individual and a member of an species. Identification means isolating something as existential unity. But in the Universe there is no isolation, there is no unity. The universe is all co-related. As I understand, the concept of nothingness describes the fact that nothing is anything because all is one.