ˈæftɚ ðə wˈɔːɹ, ɪn nˈaɪntiːnhˈʌndɹɪd fˈɪfti wˈʌn, hiː wʌz ɐpˈɔɪntᵻd tə ðə tʃˈɛɹ ʌv mˈɔːɹəl fɪlˈɑːsəfi æt ðə sˈoːɹbɑːn pˈæɹɪs aɪ ˈæftɚ nˈaɪntiːnhˈʌndɹɪd sˈɛvənti wˈʌn, wˌɛɹ hiː tˈɔːt ʌntˈɪl nˈaɪntiːnhˈʌndɹɪd sˈɛvənti ˈeɪt.
After the war, in 1951, he was appointed to the chair of Moral Philosophy at the Sorbonne (Paris I after 1971), where he taught until 1978.