Ll'aucielle s'apparano 'ncielo e 'e chiaveche'nterra.
Birds mate in the skies.
, rascals on the earth.This motto is really witty and it does not take much to be understood. Birds mate exclusively with specimen of the same breed and they easily meet each other in the skies. In the same way, evil tempered people showing no morality match with similar persons on the earth. So this motto is used when talking about a "well-matched" couple.