Illustrious, therefore, both in his life and in his death, Socrates left very many disciples of his philosophy, who vied with one another in desire for proficiency in handling those moral questions which concern the chief good (summum bonum), the possession of which can make a man blessed; and because, in the disputations of Socrates, where he raises all manner of questions, makes assertions, and then demolishes them, it did not evidently appear what he held to be the chief good, every one took from these disputations what pleased him best, and every one placed the final good in whatever it appeared to himself to consist. Now, that which is called the final good is that at which, when one has arrived, he is blessed. But so diverse were the opinions held by those followers of Socrates concerning this final good, that (a thing scarcely to be credited with respect to the followers of one master) some placed the chief good in pleasure, as Aristippus, others in virtue, as Antisthenes. Indeed, it were tedious to recount the various opinions of various disciples.
Source: Translated by Marcus Dods. From Nicene and Post-Nicene Fathers, First Series, Vol. 2. Edited by Philip Schaff. (Buffalo, NY: Christian Literature Publishing Co., 1887.)