In Plato’s Timaeus, the main work of Platonic cosmology, the concept of chaos finds its equivalent in the Greek expression chôra, which is interpreted, for instance, as shapeless space (chôra) in which material traces (ichnê) of the elements are in disordered motion (Timaeus 53a–b). However, the Platonic chôra is not a variation of the atomistic interpretation of the origin of the world, as is made clear by Plato's statement that the most appropriate definition of the chôra is "a receptacle of all becoming – its wetnurse, as it were" (Timaeus 49a), notabene a receptacle for the creative act of the demiurge, the world-maker.[22]