 Metamorphic education as formation of oneself. Investigation of a “telluric” philosophical current 
We ask here about the absence, in contemporary French-speaking thought, of a philosophical interest in adult education. The hypothesis that is tested starts from Durkheim’s analysis of the prevalence of the educational paradigm of conversion in modern thought. Pierre Hadot has reconstructed the genesis of this rupture and once again made visible the scheme of self-formation, on the Stoic model of metamorphosis. We study this contribution and we examine its importance in the thought of the last Foucault. Finally, we outline why, even in its telluric form, the metamorphosis current remains of prime importance for understanding the political and ethical issues of adult education.