Numero Platonis obscurius.
Cicero, Ad Atticum 7.13: Ænigma […] plane non intellexi; est enim numero Platonis obscurius. I didn’t quite understand your riddle; it’s more obscure than Plato’s number. I’m not sure if ‘obscure’ is the best word to describe a riddle. “Plato’s number,” or the nuptial number, is given as either 6³ or 60â´, both of which […]
Also tagged 1st century BC, Cicero, numerus, Plato's number