It is difficult to determine which Roman emperor would be considered the best role model for virtue of wisdom, as different people may have different criteria for what constitutes wisdom. However, some Roman emperors who are known for their wisdom and virtues include Marcus Aurelius, who was a philosopher-emperor and wrote the philosophical treatise "Meditations," and Augustus, who is credited with establishing the Roman Empire and establishing a period of relative peace and prosperity known as the Pax Romana. Augustus was also known for his political acumen and his ability to balance the interests of various factions within the Roman state.