Cicero's Tusculan Disputations: Also, Treatises On The Nature Of The Gods, And On The Commonwealth

How it begins

I. At a time when I had entirely, or to a great degree, released myself from my labors as an advocate, and from my duties as a senator, I had recourse again, Brutus, principally by your advice, to those studies which never had been out of my mind, although neglected at times, and which after a long interval I resumed; and now, since the principles and rules of all arts which relate to living well depend on the study of wisdom, which is called philosophy, I have thought it an employment worthy of me to illustrate them in the Latin tongue, not because philosophy could not be understood in the Greek language, or by the teaching of Greek masters; but it has always been my opinion that our countr…