Letter 815

Isidore of PelusiumUnknown|isidore pelusium
From: Isidore of Pelusium, monk
To: An unnamed person
Date: ~410 AD
Context: Isidore writes on matters of conduct.

Character is revealed not by what a person says but by what he does when no one is watching. The test of virtue is consistency. The person who changes his behavior depending on his audience has not acquired virtue — only its imitation.

Modern English rendering for readability. See the 19th-century translation or original Latin/Greek for scholarly use.