"The Sidonians according to tradition, are skilled in many beautiful arts, as the poet [Homer] also points out, and besides this they are philosophers in the science of astronomy and arithmetic, having begun their studies with practical calculations and with night sailings, for each of these branches of knowledge concerns the merchant and the shipowner; as for example, geometry was invented, it is said, from the measurement of lands which is made necessary by the Nile when it confounds the boundaries at the time of its overflows. This science, then, is believed to have come to the Greeks from the Aegyptians; astronomy and arithmetic from the Phoenicians; and at present by far the greatest store of knowledge in every other branch of philosophy is to be had from these cities. And if one must believe Poseidonius, the ancient dogma about atoms originated with Mochus, a Sidonian, born before the Trojan times. However, let us dismiss things ancient. In my time there have been famous philosophers from Sidon; Boethus, with whom I studied the Aristotelian philosophy, and his brother Diodotus; and from Tyre, Antipater, and, a little before my time, Apollonius, who published a tabulated account of the philosophers of the school of Zeno and of their books."