Ancient motto.

Many years since I read that some pope or emperor caused the following, or a motto very similar to it, to be engraven in the centre of his table:—

"Si quis amiecum absentem rodere delectat ad hanc mensam accumbere indignus est."

It being a maxim which all should observe in the daily intercourse of life, and in the propriety of which all must concur, I send this to "NOTES AND QUERIES" (the long wished-for medium), in the hopes that some kind "note-maker" can inform me from whence this motto is taken, and to whom ascribed.

J.E.M.