Not even those who possess the greatest fortunes are willing to rest satisfied with them but are always grasping

Not even those who possess the greatest fortunes are willing to rest satisfied with them but are always grasping after more and so risking the loss of what they have. Isocrates. On the Peace. Speech 8. Section 7.

Image: Relief of the Parthian Wars at the Ephesos Museum in Vienna, Austria courtesy of Wikimedia Commons contributor Magdalena Siudy (Freta)