You cannot step into the same river twice.

No same man could walk through the same river twice, as the man and the river have since changed.

Could you tell night from day? No, I regard all such distinctions as logically impossible.

Nothing is, everything is becoming.

It is by disease that health is pleasant; by evil that good is pleasant; by hunger, satiety; by weariness, rest.

Immortal mortals, mortal immortals, one living the others death and dying the others life.

The world, an entity out of everything, was created by none of the gods or men, but was, is and will be eternally living fire, regularly becoming ignited and reg- ularly becoming extinguished.