We know, that of all living beings man is the best formed, and, as the gods belong to this number, they must have a human form. ... I do not mean to say that the gods have body and blood in them; but I say that they seem as if they had bodies with blood in them. . ., Epicurus, for whom hidden things were as tangible as if he had touched them with his finger, teaches us that gods are not generally visible, but that they are intelligible; that they are not bodies having a certain solidity . . . but that we can recognize them by their passing images; that as there are atoms enough in the infinite space to produce such images, these are produced before us . . . and make us realize what are these happy, immortal beings.