And Democritus was an acquaintance of Leucippus. Democritus, son of Damasippus, a native of Abdera, conferring with many gymnosophists among the Indians, and with priests in Egypt, and with astrologers and magi in Babylon, [propounded his system]. Now he makes statements similarly with Leucippus concerning elements, viz. plenitude and vacuum, denominating plenitude entity, and vacuum non entity; and this he asserted, since existing things are con tinually moved in the vacuum. And he maintained worlds to be infinite, and varying in bulk; and that in some there is neither sun nor moon, while in others that they are larger than with us, and with others more numerous.