Well that is quite a big question, but in summation I would say the nature of reality is reality itself, in all its form and emptiness, nondually. And then one level down from that is emptiness, which is essentially god or the eternal witness Which has no properties but experiencing all things subjectively through all beings, and since all matter is merely energy condensed to a slow vibration, even rocks are beings. the "I-I", or that which precedes my individual ego and body, is the same as your "I-I" and everyone's, a circle whose center is everywhere and circumference is nowhere. So on that level all things are relative and subjective and also inherently without individual self existence, that is, everything is dependant on everything else and the only individual is the same behind all things. But on the "final" or really the "only" level, all is simply all, objective and subjective both. This is my belief, at least at the moment. Time and space are sins in my belief because they are illusions that separate us from the sense that we are all brethren closer than our breath, which is sad. but i don't tend to use the word "sin" because it assumes us guilt where we might more groovily be assuming grace, although i believe in concepts essentially similar to sin.