Sapientis judicis est cogitare tantum sibi esse permissum

Sapientis judicis est cogitare tantum sibi esse permissum, quantum commissum et creditum. A wise man should consdier as much what he premises as what he commits and believes. 4 Co. Inst. 193.

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