Ratio est legis anima, mutata legis ratione mutatur et lex – Reason is the soul of the law; when the reason of the law changes the law also is changed.
Re – In the matter of.
Reprobata pecunia leberat solventem – Money refused releases the debtor.
Res – Matter, affair, thing, circumstance.
Res gestae – Things done.
Res integra – A matter untouched (by decision).
Res inter alios acta alteri nocere non debet – Things done between strangers ought not to affect a third person, who is a stranger to the transaction.
Res judicata accipitur pro veritate – A thing adjudged is accepted for the truth.
Res nulius – Nobody’s property.
Respondeat superior – Let the principal answer.
Rex est major singulis, minor universis – The King is greater than individuals, less than all the people.
Rex non debet judicare sed secundum legem – The King ought not to judge but according to the law.
Rex non potest peccare – The King can do no wrong.
Rex nunquma moritur – The King never dies.
Rex quod injustum est facere non potest – The King cannot do what is unjust.