Si a jure discedas vagus eris

Si a jure discedas vagus eris, et erunt omnia omnibus incerta. If you depart from the law, you will wander without a guide, and everything will be in a state of uncertainty to every one. Co. Litt. 227.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.