The Opinions of Opponents.—In order to measure the natural subtlety or weakness of even the cleverest heads, we must consider the manner in which they take up and reproduce the opinions of their adversaries, for the natural measure of any intellect is thereby revealed. The perfect sage involuntarily idealises his opponent and frees his inconsistencies from all defects and accidentalities: he only takes up arms against him when he has thus turned his opponent into a god with shining weapons.