He was the arbiter of townspeople, of feudal lords and of kings.
At Campo Formio he showed himself the first diplomatist of the age, and the arbiter of the destinies of Europe.
He frequently assisted Philip in conducting negotiations with foreign powers, and he was an arbiter in tournaments and on all questions of chivalry, where his wide knowledge of heraldry was highly useful.
Lombardy was made the seat of war; and here the king of Sardinia acted as in some sense the arbiter of the situation.
The same prospect was held out to Charles IV., the queen and Godoy, with the result that the rivals for the throne proceeded to the north of Spain to meet the arbiter of their destinies.