Ar. Did. _Epit._ 39, 2; _Dox._ 471. Zeno as well as Herakleitos says that the soul is a perceptive exhalation. The latter desiring to make it clear that souls always gain mental faculties by giving forth exhalations, likened them to rivers; and these are his words: (Fr. 42) ‘Other and yet other waters are flowing on upon those who step in the same rivers.’ Sim. in _Phys._ 6 r; _Dox._ 475. (Theophrastos says) Hippasos of Metapontum and Herakleitos of Ephesos teach that the one is moved and limited, but they make fire the first principle and derive all things from fire by condensation and rarefaction, and again they resolve them into fire since this one thing is the essential nature underlying their appearance; for Herakleitos says that all things are transformations of fire [πυρὸς ἀμοιβὴν], and he finds a certain order and definite time in the changes of the universe according to a fated [εἱμαρμένην] necessity. Theoph. _de Sens._ 1; _Dox._ 499. The followers of Anaxagoras and Herakleitos say that men perceive by the presence in themselves of the opposite quality. Phil. _de Piet._ 14, 25; _Dox._ 548. (Chrysippos) in his third book says that the universe is one of the beings endowed with sense, fellow-citizen with men and gods, and that strife and Zeus are the same thing, as Herakleitos says. Hipp. _Phil._ 44; _Dox._ 558. Herakleitos the Ephesian, a philosopher of the physical school, was always lamenting, charging all men with ignorance of the whole of life, but still he pitied the life of mortals. For he would say that he himself knew all things, but that other men knew nothing. His language agrees quite well with that of Empedokles when he says that strife and love are the first principles of all things, and that god is intelligent fire, and that all things enter into a common motion and do not stand still. And as Empedokles said that the whole region occupied by man is full of evils, and that the evils extend from the region about the earth as far as the moon but do not go farther, inasmuch as all the region beyond the moon is purer, so also it seemed to Herakleitos. Epi. _adv. Haer._ iii. 20; _Dox._ 591. Herakleitos the Ephesian, son of Blyson, said that fire is the source of all things, and that all things are resolved into fire again. Galen, _His. Phil._ 62; _Dox._ 626. Herakleitos says that the sun is a burning mass, kindled at its rising, and quenched at its setting. Herm. _I. G. P._ 13; _Dox._ 654. Perhaps I might yield to the arguments of noble Demokritos and want to laugh with him, unless Herakleitos led me to the opposite view as he said weeping: Fire is the first principle of all things, and it is subject to rarefaction and condensation, the one active, the other passive, the one synthetic, the other analytic. Enough for me, for I am already steeped in such first principles.