plied myself to them from my youth, at no small expense of time and trouble; and I have been in the habit of philosophizing a great deal when I least seemed to think about it; for the truth of which I appeal to my orations, which are filled with quotations from philosophers, and to my intimacy with those very learned men who frequented my house and conversed daily with me, particularly Diodorus, Philo, Antiochus, and Posidonius,[1] under whom I was bred; and if all the precepts of philosophy are to have reference to the conduct of life, I am inclined to think that I have advanced, both in public and private affairs, only such principles as may be supported by reason and authority.
IV. But if any one should ask what has induced me, in the decline of life, to write on these subjects, nothing is more easily answered; for when I found myself entirely disengaged from business, and the commonwealth reduced to the necessity of being governed by the direction and care of one man,[2] I thought it becoming, for the sake of the public, to instruct my countrymen in philosophy, and that it would be of importance, and much to the honor and commendation of our city, to have such great and excellent subjects introduced in the Latin tongue. I the less repent of my undertaking, since I plainly see that I have excited in many a desire, not only of learning, but of writing; for we have had several Romans well grounded in the learning of the Greeks who were unable to communicate to their countrymen what they had learned, because they looked upon it as impossible to express that in Latin which they had received from the Greeks. In this point I think I have succeeded so well that what I have done is not, even in copiousness of expression, inferior to that language.
Another inducement to it was a melancholy disposition of mind, and the great and heavy oppression of fortune that was upon me; from which, if I could have found any surer remedy, I would not have sought relief in this pursuit. But I could procure ease by no means better than by not only applying myself to books, but by devoting my-
