Ancient philosophy proposed to mankind an art of living. By contrast, modern philosophy appears above all as the construction of a technical jargon r… - Pierre Hadot

“If these experiences [of union with the Absolute] are rare, nonetheless they lend their fundamental tonality to the Plotinian way of life, for that way of life appears to us now as a waiting for the unforseeable surging-forth of these privileged moments which give their full sense to life

One could say that what differentiates ancient from modern philosophy is the fact that, in ancient philosophy, it was not only Chrysippus or Epicurus who, just because they had developed a philosophical discourse, were considered philosophers. Rather, every person who lived according to the precepts of Chrysippus or Epicurus was every bit as much a philosopher as they.

Philosophy—reduced, as we have seen, to philosophical discourse—develops from this point on in a different atmosphere and environment from that of ancient philosophy. In modern university philosophy, philosophy is obviously no longer a way of life, or a form of life—unless it be the form of life of a professor of philosophy.