There is exchange of all things for fire and of fire for all things, as there is of wares for gold and of gold for wares.
Of all whose words I have heard, no one attains to this, to know that wisdom is apart from all.
It would not be better if things happened to men just as they wish.
All things flow, nothing abides.
There is harmony in the tension of opposites, as in the case of the bow and lyre.
Everything flows and nothing abides; everything gives way and nothing stays fixed... Cool things become warm, the warm grows cool; the moist dries, the parched becomes moist... It is in changing that things find repose.