A friend:

"Vale, Messala, fac me ames."

A superlative wag, but incorrect withal:

"Cosmus nequitiae est magnussimae."

A learned man, or a philosopher:

"Non est exsilium ex patria sapientibus."

A complaining suitor:

"Sara non belle facis.
Solum me relinquis,
Debilis...."

A wrangler and disputant threatening the other party with a law-suit: