Page:Early Greek philosophy by John Burnet, 3rd edition, 1920.djvu/166

152 the opposite process goes on simultaneously, we appear to remain the same.

74. This, however, is not all. Man is subject to a certain oscillation in his "measures" of fire and water, which gives rise to the alternations of sleeping and waking, life and death. The locus classicus on this is a passage of Sextus Empiricus, which reproduces the account given by Ainesidemos. It is as follows (R.P. 41):