Argumentum ab impossibili plurimum valet in lege.
An argument deduced from an impossibility has the greatest validity in law.
Argumentum ab inconvenienti plurimum valet in lege.
An argument drawn from what is unsuitable (or improper) has the greatest validity in law.
Argumentum a communiter accidentibus in jure frequens est.
An argument from things commonly happening is frequent in law.
Argumentum est fortissimum in jure.
An argument from the subdivision of the subject is most powerful in law.
Argumentum a majori ad minus negatio non valet; valet e converso.
An argument from the greater to the lesser does not hold in the negative (but conversely the affirmative is valid).
Argumentum a minori ad majus.
An argument from the lesser (to a similar case) has force in law.
Assignatus utitur jure auctoris.
An assignee uses the right of his author.
A verbis legis non est recedendum.
The words of the law are not to be departed from.