Page:Early Greek philosophy by John Burnet, 3rd edition, 1920.djvu/170

156 This, however, diminishes the power of the sun to cause evaporation, and so it must return to the north that it may supply itself with nourishment. Such was, at any rate, the Stoic doctrine, and that it comes from Herakleitos seems to be proved by its occurrence in the Περὶ διαίτης. The following passage is clearly Herakleitean:

77. Herakleitos spoke also of a longer period, which is identified with the "Great Year," and is variously described as lasting 18,000 and 10,800 years. We have no definite statement, however, of what process Herakleitos supposed