Numenius (second century AD), the only witty Platonist after Plato himself, memorably described Plato as ‘Moses talking Attic’. He did not mean thereby to rate Eastern wisdom more highly than Platonic philosophy, as is sometimes suggested, but to recognise in the words ‘I AM THAT I AM’, spoken to Moses by the God of the Hebrews, an anticipation, unique in Eastern lore, of the conception Numenius championed of the Platonic first principle One or Good as Being itself. This paper proposes that his further exploration of that idea shows him to have construed the Timaeus account of such being as an eternal present, or in Boethius’s words ‘the complete possession all at once of an infinite life’, not as timelessness (the Timaeus interpretation advocated by Richard Sorabji). It is argued that this was both a correct interpretation of Plato’s text, and one shared in much subsequent ancient and medieval philosophy, including Plotinus, Augustine, and Aquinas. From our own human perspective, a present tense without past or future connections might be considered ‘a kind of logical torso’, a defective remnant of ordinary time. For Plato that human conception of present time is itself a mere image of eternity.