The ignorance of a judge is the calamity of the innocent.
Ignorantia juris non excusat.
Ignorance of the law does not excuse.
Ignorantia juris sui non præjudicat juri.
Ignorance of ones own right is not prejudicial to that right.
Ignorantia legum neminem excusat, omnes enim præsumuntur eas nosse quibus omnes consentiant.
Ignorance of the law excuses no body, for all are presumed to know those things on which all agree.
Ignorantia non excusat legem.
Ignorance does not excuse the law.
Illud quod alias licitum non est, necessitas facit licitum; et necessitas inducit privilegium quod jure privatur.