Abstract
The arguments I examine in this chapter are not necessarily from Anaximander. Anaximander is generally known for having put the ἄπειρον as a principle (ἀρχή), probably due to the greater radicality with which he affirmed the physical – perhaps also epistemic – indeterminacy (and the consequent ineffability) of the principle of the φύσις. However, it is well known that, according to Aristotle, a large part of archaic physics or physiology had placed the ἄπειρον as the origin and foundation of the becoming, to the point of deifying it as a living, surrounding, ruling and probably animated body (σῶμα), whose nature was separate or at any rate different from visible reality and its major components. I will call it Arkhé Apeiros Theory (TAA). A TAA then exists for archaic philosophy in general, and not only for Anaximander, and is based on a fairly clear common feature, namely the idea that the principle of nature is an indeterminate body (σῶμα ἄπειρον) and is, therefore, although to a variable extent, unknowable-ineffable.