Abstract

In this chapter, the arguably most complex and most important part of Proclus’ metaphysics is under scrutiny: the One, the Henads, and the principles. The author discusses the transcendence and knowability of the One/Good, and how it can be a cause; the Iamblichean principles Limit and Unlimited, as the first coupling of unity and multiplicity, and how they invert the Aristotelian notion of dunamis. Together these principles produce ‘the mixture’, and all beings result from the triad Limit-Unlimited-Mixture. The author then moves on to analysing the structure of the intelligible world in detail as an accumulation of determinations derived from these principles and the second hypothesis of the Parmenides, and to showing how the fourteen layers of the intelligible allow a rationalization of the controversial Henads, as participated forms of unity: they do not form a hypostasis in their own right, but they are all supra-essential.