[52] [cap.10] [Yonge. 15] However, time also affords a very great argument in favour of the eternity of the world, for if time is uncreated, then it follows of necessity that the world also must be uncreated. Why so? Because, as the great Plato says, it is days, and nights, and months, and the periods of years which have shown time, and it is surely impossible that time can exist without the motion of the sun, and the rotary progress of the whole heaven. So that it has been defined very felicitously by those who are in the habit of giving definitions of things, that time is the interval of the motion of the world, and since this is a sound definition, then the world must be co-eval with time and also the cause of its existence.