Providing best counsel without bias

It should be the duty of all speakers to give no expression to their hatred or their partiality, but to put forward just what each thinks the best counsel, especially when you are debating a question of urgent public importance. Demosthenes. On the Chersonese. Book 8. Section 1.

Bronze Romano-Etruscan sculpture of an orator found in Perugia dating to 100 BCE from the collection of Cosimo de' Medici, now held in the Archaeological Museum of Florence.
Image courtesy of Wikimedia Commons.