Strabo Geography 2.3.8

[8] First, then, the Ethiopians next Egypt are actually separated into two divisions; one part being in Asia, the other in Libya, otherwise there is no distinction between them. But it was not on this account that Homer divided the Ethiopians, nor yet because he was acquainted with the physical superiority of the Indians, (for it is not probable that Homer had the slightest idea of the Indians, since, according to the assertion of Eudoxus, Euergetes was both ignorant of India, and of the voyage thither,) but his division rather resulted from the cause we formerly mentioned. We have shown that as for the alteration of Crates, it makes no difference whether it be read so or not. Posidonius, however, says that it does make a difference, and would be better altered into towards the descending [sun]. But in what can this be said to differ from towards the west, since the whole section of the hemisphere west of the meridian is styled the west, not only the mere semicircle of the horizon. This is manifested by the following expression of Aratus,

Where the extremities of the west and east blend together. ¹

Phaenom. v. 61. However, if the reading of Posidonius be preferable to that of Crates, any one may likewise claim for it a superiority over that of Aristarchus. So much for Posidonius. There are, however, many particulars relating to Geography, which we shall bring under discussion; others relating to Physics, which must be examined elsewhere, or altogether disregarded; for he is much too fond of imitating Aristotle’s propensity for diving into causes, a subject which we [Stoics] scrupulously avoid, simply because of the extreme darkness in which all causes are enveloped.