It is said that "the All", consisting of five aggregates/ six sense spheres, has three important characteristics: it is impermanent (anicca), suffering (dukha) and not-self (anatta). Nirvana, which is a state of escape from the All, is given the opposite of the two characteristics, it is said to be permanent (nicca) and supreme happiness (param sukham), but not that it is self (atta), or supreme self (param attam). It is a little, well, asymmetrical. Does anyone have any opinion about this? Could the buddhist opinions about the true atta spring from this asymmetry?