What is it?

It has been in existence since the beginningless past; it knows neither birth nor death; it is neither blue nor yellow; it has neither shape nor form; it is beyond the category of being and non-being; it is not to be measured by age, old or new; it is neither long nor short; it is neither large nor small; for it transcends all limits, words, traces and opposites. It must be taken just as it is in itself; when an attempt is made on our part to grasp it in our thoughts, it eludes. It is like space whose boundaries are altogether beyond measurement; no concepts are applicable here. – Huang-Po