An argument from division is the strongest in the law.
Argumentum a majori ad minus, negativè, non valet; valet e converso.
An argument from the greater to the less negatively, has no weight; contrariwise.
Argumentum a simili valet in lege.
An argument from a like case has weight in law.
Argumentum ab authoritate est fortissimum in lege.
An argument drawn from authority is very strong in law.
Argumentum ab impossibili, plurimum valet in lege.
An argument from an impossibility has very great weight in law.
Argumentum ab inconvenienti est validum in lege; quia lex non permittit aliquod inconveniens.