Necessity excuses or extenuates a transgression in capital cases, which does not operate the same in civil cases.
Necessitas facit licitum quod alias non est licitum.
Necessity makes a thing lawful, which otherwise is unlawful.
Necessitas inducit privilegium quod jure privatur.
Necessity brings in a privilege which is taken away by law.
Necessitas non habet legem.
Necessity hath no law.
Necessitas publica major est quam privata.
Public necessity is greater than private necessity.
Necessitas quod cogit, defendit.