Affinis mei et affinis non est mihi affinis.
A person connected by marriage to someone connected by marriage to me is no connection of mine.
Affirmanti, non neganti, incumbit probatio.
The proof lies on the one who affirms, not on the one who denies.
Affirmantis est probare.
The person who affirms must prove.
Agentes et consentientes pari poena plectuntur.
Acting and consenting parties will be liable to the same punishment.
A jure suo cadunt.
They fall from their right.
A justitia et justitia non est recedendum.
From justice as from the law all rights flow.
Alienatio bene fieri non potest nisi observata forma.
A transfer is not properly made unless formalities are observed.