The oracle at delphi had two maxims posted above the entrance to her chamber , for the edification of those who sought her prophecy : " know thyself " and " nothing in excess " .
Much of the art made during the italian renaissance was specifically commissioned by thecatholic church , to adorn the walls of catholic cathedrals , for the everlasting edification of catholic god lovers .
Just as parents should look to the edification of their children , despite the personal sacrifice it may require of themselves , so alsochildren should recognize and appreciate such sacrifices that were madeon their behalf .
It is one of a set from john ray 's and francis willughby 's book " historia piscium " , published in 1686 by the royal society and recently put online by them for the edification of scholars everywhere .