On the Unchangeableness of God (172-174)

and, in truth, the matters about which you are anxious are absolutely nothing. Do you think that anything mortal has any real being and existence, and that it is not rather something borne up and suspended by the rope of some false and untrustworthy opinion, resting on empty air, and in no respect differing from deceitful dreams?

And if you are unwilling to contemplate the fortunes of particular men, think upon the changes, whether for the better or for the worse, of whole countries and nations. At one time Greece was flourishing, but the Macedonians took away the power of that land; then, in turn, Macedonia became mighty, but that, being divided into small portions became weak, until at last it was entirely extinguished.

Before the time of the Macedonians the Persians prospered, but one day overthrew their exceeding and extensive prosperity. And now the Parthians are more powerful than the Persians, who a little while ago were their masters, ever were; and those who were their subjects are now masters. Once, and for a very long time, Egypt was a mighty empire, but its great dominion and glory have passed away like a cloud. What has become of the Ethiopians, and of Carthage, and of the kingdoms of Libya? Where now are the kings of Pontus?