Definition of De Gratia Speciali Certa Scientia Et Mero Motu Talis Clausula Non Valet In His In Quibus Praesumitur Principem Esse Ignorantem | OpenJurist

Definitions from Black's Law Dictionary: 2nd Edition and Ballentine's Law Dictionary as are available for each term in each dictionary.

De gratia speciali certa scientia et mero motu, talis clausula non valet in his in quibus praesumitur principem esse ignorantem

Ballentine's Law Dictionary

Definition:
Of special favor, certain knowledge and mere motion, is worthless in those matters in which the prince is presumed to be ignorant.