Sentiments concerning nature with which philosophers were delighted
Book I.
Book II.
Book III.
Book IV.
Book V
The Stoics say that the stars are of a circular form, like as the sun, the moon, and the world. Cleanthes, that they are of a conical figure. Anaximenes, that they are fastened as nails in the crystalline firmament; some others, that they are fiery plates of gold, resembling pictures.