His annual circuit is in three hundred and sixty-five days, and nearly six hours more.[130] At one time he bends his course to the north, at another to the south, and thus produces summer and winter, with the other two seasons, one of which succeeds the decline of winter, and the other that of summer.

And so to these four changes of the seasons we attribute the origin and cause of all the productions both of sea and land.
The moon completes the same course every month which the sun does in a year.

The nearer she approaches to the sun, the dimmer light does she yield, and when most remote from it she shines with the fullest brilliancy; nor are her figure and form only changed in her wane, but her situation likewise, which is sometimes in the north and sometimes in the south.

By this course she has a sort of summer and winter solstices; and by her influence she contributes to the nourishment and increase of animated beings, and to the ripeness and maturity of all vegetables.
XX.

But most worthy our admiration is the motion of those five stars which are falsely called wandering stars; for they cannot be said to wander which keep from all eternity their approaches and retreats, and have all the rest of their motions, in one regular constant and established order.