8 surviving letters between Isidore of Pelusium and Paulos, spanning c. 398–429.
I consider it a sacred duty to trust the divine oracles and follow them diligently, rather than to prefer one's own...
One must never contract the nature of the Godhead in the Jewish manner, reducing it to the Father alone, nor expand...
Wealth is a tool, not a treasure.
Virtue must be practiced with all one's strength — not merely admired from a distance.
The priesthood is a sacred trust, not a career.
God's judgment is certain, and no amount of cleverness or delay can avoid it.
Character is revealed not by what a person says but by what he does when no one is watching.