All things flow, nothing abides. You cannot step into the same river twice, for the waters are continually flowing on. Nothing is permanent except change.

It is difficult to fight against anger; for a man will buy revenge with his soul.

War is the father and king of all.

Eyes are more accurate witnesses than ears.

Knowledge of divine things for the most part is lost to us by incredulity.

Of the Logos which is as I describe it men always prove to be uncomprehending, both before they have heard it and when once they have heard it. For although all things happen according to this Logos, they [men] are like people of no experience, even when they experience such words and deeds as I explain, when I distinguish each thing according to its constitution and declare how it is; but the rest of men fail to notice what they do after they wake up just as they forget what they do when asleep.

Most people do not take heed of the things they encounter, nor do they grasp them even when they have learned about them, although they suppose they do.