Expressio unius est exclusio alterius - "The express mention of one thing excludes all others." When items are listed, anything not explicitly stated is assumed to not be included.⏎
Fiat justitia et pereat mundus - "Let there be justice, though the world perish." Often used as a motto, notably by Ferdinand I, Holy Roman Emperor.⏎
Inter arma enim silent leges - "For among arms, the laws fall silent." A concept that during war, many illegal activities occur. Also taken to mean that in times of war, laws are suppressed, ostensibly for the good of the country.⏎
Ex turpi causa non oritur actio - "From a dishonorable cause an action does not arise." A party cannot bring a legal action for consequences of his own illegal act.⏎
Ex factis jus oritur - "The law arises from the facts." A principle in international law that one must take facts on the ground into account when considering the legality of certain kinds of questions.⏎