There are different degrees, but they are not to be discussed on this path. Because, after all, different stages are the conceptions, the speculations of some wise people. It is just the same as with music: there are seven notes of music, because the musician has accepted that there are seven, but a scale can be made to contain more notes or less notes if the musician wishes to make it so. We distinguish stages, although in reality it is impossible to do so. It is a spontaneous development on the spiritual path which may be called treading the path of initiation.