Say so, yes, replied Simmias, and swear to it, with all the confidence in life. And do we know the nature of this absolute essence? To be sure, he said. And whence did we obtain our knowledge? Did we not see equalities of material things, such as pieces of wood and stones, and gather from them the idea of an equality which is different from them? For you will acknowledge that there is a difference. Or look at the matter in another way:—Do not the same pieces of wood or stone appear at one time equal,