68 AN INTRODUCTION TO SUFI DOCTRINE a polarity, but it is integrated in Unity, for of the two opposing terms, the higher is resolved in the Divine Being (al-Wujad) which is nothing other than the first affirmation, perfect and unconditioned, of the Essence (adh-Dhat)!, whereas the lower finds its resolution in the ‘principial possibilities” (al-a‘yan ath-thabitah), and these are themselves likewise reducible to the Es- sence, of which they are merely ‘‘ determinations” or ““relations ” (nisab), ‘ non-existent as such, though per- manent” (Ibn ‘Arabi, in the Chapter on Enoch, of his Fusus al-Hikam). It must be clearly understood that this purely logi- cal opposing of Being and ‘ principial possibilities™ does not at all envisage distinct cosmic entities but in a sense represents a speculative key to the reintegration of all possible dualities in the Unity of the Essence, though it also corresponds to a precise metaphysical reality. As for the symbolism connected with it which presents Divine Being as a source of light, the “ out- pouring” or ‘“‘overflowing’ (al-fayd) of which spreads out on to the possibilities, which can themselves be compared to a dark space,? this must not be under- stood in the sense of a substantial emanation, for it is clear that Being could not go outside Itself, since noth- ing is outside It. Being reveals the Essence by affirma- tion whereas the principial possibilities are reducible to It by a sort of negation since they are only limita- 1. In itself the Essence is apart from every determination—even from that of Being (Wujud). It is at the same time Being and Non-Being (Wujud wa ‘Udum). 2. Light and Space are the two most direct symbols of Beirg and of Possibility.