[46] But first of all, God wishes to make it understood by you that there is one place for infants and another for full-grown men, the one being called practise and the other wisdom; and secondly, that the most beautiful of all the things in nature are rather such as can be seen than such as can be acquired; for how can it be possible [48] [49] [50] to acquire possession of those things which are endowed in the same degree with the diviner attributes? But it is not impossible to see them, though it may not be given to all men to do so, for this may be permitted only to the purest and most acute-sighted race, to whom the father of the universe, when he displays his own works, is giving the greatest of all gifts.