He urges the necessity of strength, courage, energy, self-denial, in order to attain the post of ruler over others; which, however, Aristippus fences by saying that he has no ambition to rule; he prefers the middle course of a free man, neither ruling nor ruled over.

Next, Sokrates recalls the dangers and evil contingencies of subjection, of being oppressed, unjustly treated, sold into slavery, and the consequent wretchedness to one unhardened by an adequate discipline.
It is in this argument that he recites the well-known apologue called the choice of Herakles; in which, Virtue on the one hand, and Pleasure with attendant vice on the other, with their respective consequences, are set before a youth in his opening career.

The whole argument with Aristippus was purely prudential; but Aristippus was not convinced nor brought over to the Sokratic ideal.

He nevertheless adopted a no less prudential and self-denying plan of his own.
Aristippus did not write an account of his system; and the particulars of his life, which would show how he acted it, are but imperfectly preserved.

He was the first theorist to avow and maintain that Pleasure, and the absence of Pain, are the proper, the direct, the immediate, the sole end of living; not of course mere present pleasures and present relief from pain, but present and future taken in one great total.