necessitas inducit privilegium quoad jura privata

/nasesataes and(y)iiwsat privaliyj(i)yam kwowaed jura praveyta/

Necessity gives a privilege with reference to private rights. The necessity involved in this maxim is of three kinds, viz.:

(1) Necessity of self-preservation;

(2) of obedience; and

(3) necessity resulting from the act of God, or of a stranger