Incommensurables donc, mais aussi inséparables. Pas de discours qui mérite d’être appelé philosophique, s’il est séparé de la vie philosophique, pas … - Pierre Hadot

...to replace, as far as possible, works in the concrete conditions wherein they were written, spiritual conditions in part, that is to say, philosophical, rhetorical or poetic tradition, material conditions in part, that is to say, scholarly and social milieu, constraints stemming from the material support of writing, historical circumstances. Every work must be replaced in the praxis from which it emanates.

From the preceding examples, we may get some idea of the change in perspective that may occur in our reading and interpretation of the philosophical works of antiquity when we consider them from the point of view of the practice of spiritual exercises. Philosophy then appears in its original aspect: not as a theoretical construct, but as a method for training people to live and to look at the world in a new way. It is an attempt to transform mankind. Contemporary historians of philosophy are today scarcely inclined to pay attention to this aspect, although it is an essential one. The reason for this is that, in conformity with a tradition inherited from the Middle Ages … they consider philosophy to be purely abstract-theoretical activity.

Ancient philosophy proposed to mankind an art of living. By contrast, modern philosophy appears above all as the construction of a technical jargon reserved for specialists.