IV. Nor was Pythagoras the inventor only of the name, but he enlarged also the thing itself, and, when he came into Italy after this conversation at Phlius, he adorned that Greece, which is called Great Greece, both privately and publicly, with the most excellent institutions and arts; but of his school and system I shall, perhaps, find another opportunity to speak. But numbers and motions, and the beginning and end of all things, were the subjects of the ancient philosophy down to Socrates, who was a pupil of Archelaus, who had been the disciple of Anaxagoras. These made diligent inquiry into the magnitude of the stars, their distances, courses, and all that relates to the heavens. But Socrates was the first who brought down philosophy from the heavens, placed it in cities, introduced it into families, and obliged it to examine into life and morals, and good and evil. And his different methods of discussing questions, together with the variety of his topics, and the greatness of his abilities, being immortalized by the memory and writings of Plato, gave rise to many sects of philosophers of different sentiments, of all which I have principally adhered to that one which, in my opinion, Socrates himself followed; and argue so as to conceal my own opinion, while I deliver others from their errors, and so discover what has the greatest appearance of probability in every question. And the custom Carneades adopted with great copiousness and acuteness, and I myself have often given in to it on many occasions elsewhere, and in this manner, too, I disputed lately, in my Tusculan villa; indeed, I have sent you a book of the four former days' discussions; but the fifth day, when we had seated ourselves as before, what we were to dispute on was proposed thus:
V. _A._ I do not think virtue can possibly be sufficient for a happy life.
_M._ But my friend Brutus thinks so, whose judgment, with submission, I greatly prefer to yours.
_A._ I make no doubt of it; but your regard for him is not the business now: the question is now, what is the real character of that quality of which I have declared my opinion. I wish you to dispute on that.
_M._ What! do you deny that virtue can possibly be sufficient for a happy life?