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.⏎
Consensus facit legem - Stipulates that when two or more persons arrive at a good faith agreement, the law will insist on that agreement being carried out.⏎
Dubia in meliorem partem interpretari debent - "Doubtful things should be interpreted in the best way". Often spoken as "to give the benefit of the doubt".⏎
Delegatus non potest delegare - That which has been delegated cannot delegate further.⏎