Institutio Oratoria

There is no great difference, in my opinion, between judgment and sagacity, except that the former deals with evident facts, while the latter is concerned with hidden facts or such as have not yet been discovered or still remain in doubt. Again judgment is more often than not a matter of

certainty, while sagacity is a form of reasoning from deep-lying premises, which generally weighs and compares a number of arguments and in itself involves both invention and judgment.