Consuetudo pro lege servatur - "Custom is held as law". Where no laws apply to a given situation, the customs of the place and time will have the force of law.⏎
Audi alteram partem or audiatur et altera pars - Refers to the idea that one cannot be fairly judged unless the cases for and against them have been heard.⏎
Cuius est solum eius est usque ad coelum et ad inferos - Used in reference to the rights of property owners to the air above, and land below, their property.⏎
Cogitationis poenam nemo patitur - No one suffers punishment for mere intent.⏎
Delegatus non potest delegare - That which has been delegated cannot delegate further.⏎