In Philip K. Dick's novel Counter-Clock World, the following inscription is said to be written on the Anarch's tomb:
Sic igitur magni quoque circum moenia mundi
expugnata dabunt labem putresque ruinas.
What does it mean in English?
The quote is by Lucretius. In the translation of W.H. Mallock:
"So likewise the walls of the great universe assailed on all sides shall suffer decay, and fall into mouldering ruin."
--Book ii 1144, 1145, Lucretius on Life and Death: In the Metre of Omar Khayyam