A life devoted to study and speculation was to a Roman citizen impossible. Cicero, who did more than any of his countrymen to naturalize Greek philosophy on Roman soil through the medium of the Latin language, was a practical statesman. When forced to retire from the service of the state he longed to return to its labors, notwithstanding the dangers to be incurred. Livy and Virgil devoted their lives almost exclusively to the glorification of the past in extolling the heroes by whose toil, endurance, and self-sacrifice, the Rome of their day had become what it was. Though in a sense living in retirement, their thoughts were none the less upon the state; their time and talents not the less devoted to its service. To a Roman the state embodied almost everything worth living for; asceticism was impossible for him. Even when not actively engaged in public affairs he found pleasure in observing, at close range, the machinery of government in action. He longed to live and move in the strife and turmoil of the capital. We need not wonder that Ovid, in exile, was ready to submit with cheerful alacrity to any moral indignity, and to humiliate himself in the dust before his emperor, would he but permit him to return to the city which his spirit had never left. Seneca’s conduct, when in banishment, was even less to his credit than that of Ovid, inasmuch as he professed to be governed by far higher principles. He thought he was a philosopher, yet when compelled to live in Corsica where he had all his time to devote to study and meditation, he was wretched in the extreme; belittled himself by the most degrading exhibition of servility; did not scruple to stoop to the most shameful falsehoods and the most disgusting flattery in order to bring about his recall. His encomium on solitude, and his aversion to crowds, if they are anything more than mere theory, are the result of larger experience and of deeper insight into the human heart. Yet it is hardly open to doubt that he could have gone into voluntary retirement at any period of his life, except perhaps near its close. It has been said of the emperor Marcus Aurelius, that his mind was more Greek than Roman. While it is true that he loved philosophy, and studied it daily, he did so in the belief that in this way he could the better prepare his mind and heart to perform the duties which his exalted station imposed upon him. He seems never to have seriously entertained the thought that it was in his power at all times to lay down his official burdens in order to follow his natural inclinations. His highest ideal of virtue was to cultivate and strengthen his sense of duty; but this duty was primarily political.