I was recently reading the lucid exposition of the middle way by Candrakirti. And what struck me was sunyata=emptiness. However, the misunderstood meaning of sunyata is not emptiness but absence of being in all things. But even that is not the full meaning in relation to the two truths of our everyday world and that of ultimate reality. And I love Candrakirti final statement. That nirvana does not exist. Nirvana is no-nirvana the lord of existence taught; a knot tied by infinitude and loosed even by the same. The real problem is understanding the middle way. After many years of dharma practice and study I finally realized that all conceptual constructions such as Buddha nature, enlightenment, identity, karma etc are just empty words. Because the Buddha's most important teaching is to understand who is suffering and why. Who is being born. Who is dying. Am I really this body. Is it really mine. When in infancy did this idea of self and other develop. What was I before that. Nirvana is not a realm. It is tied together with samasra. Buddha nature is no nature. Karma is an empty word with no meaning.