21. The transformations of fire are, first of all, sea; and of the sea one half is earth, and the other half is lightning flash. Zeller, i. 647 n. 1, regards πρηστήρ as identical with κεραυνός of Fr. 28. Burnett, _Early Greek Philosophy_, p. 153 n. 53, suggests fiery stormcloud, Seneca’s _igneus turbo_. 22. All things are exchanged for fire, and fire for all things; as wares are exchanged for gold, and gold for wares. 23. (The earth) is poured out as sea, and measures the same amount as existed before it became earth. V. Lassalle, ii. 63; Heinze, _Logos_, p. 25; Schuster, p. 129; Zeller, i. 690 n. 1. 24. Want and satiety. Context: Fire is intelligent and the governing cause of all things. Herakleitos calls it want and satiety. In his opinion want is the process of arrangement, and satiety the process of conflagration. 25. Fire lives in the death of earth, and air lives in the death of fire; water lives in the death of air, and earth in that of water. Not accepted by Zeller, i. 676, who regards it as a Stoic version of Fr. 68. 26. Fire coming upon all things will test them, and lay hold of them. Burnett suggests that the reference to a judgment (κρινέει) was inserted by Hippolytos to obtain the Christian idea of a judgment. 27. How could one escape the notice of that which never sets? Cf. Schuster, p. 184; Zeller, i. 649 n. 2; Teichmüller, i. 184. 28. The thunderbolt directs the course of all things. Cf. Fr. 19. 29. The sun will not overstep his bounds; if he does, the Erinnyes, allies of justice, will find him out. 30. The limit of the evening and the morning is the Bear; and opposite the Bear is the boundary of bright Zeus. Strabo regards this as a Homeric expression for the fact that the northern circle is the boundary of rising and setting. Zeus _aithrios_ means the clear heavens. 31. If there were no sun, it would be night. 32. The sun is new every day. 33. (Herakleitos and Demokritos bear witness that Thales was an astronomer, and predicted eclipses, etc.) 34. The seasons bring all things. ‘Time is not motion of a simple sort, but, so to speak, motion in an order which has measure and limits and periods. The sun, guardian of these, ... appoints and announces the seasons, which, according to Herakleitos, bring all things.’ 35. Hesiod is the teacher of most men; they suppose that his knowledge was very extensive, when in fact he did not know night and day, for they are one. 36. God is day and night, winter and summer, war and peace, satiety and hunger; but he assumes different forms, just as when incense is mingled with incense; every one gives him the name he pleases. 37. If all things should become smoke, then perception would be by the nostrils.