Whereas the lost works appear to have been originally written with a view to subsequent publication, the surviving works mostly resemble lecture notes not intended for publication.
wˈɛɹæz ðə lˈɔst wˈɜːks ɐpˈɪɹ tə hɐvbɪn ɚɹˈɪdʒɪnəli ɹˈɪʔn̩ wɪð ɐ vjˈuː tə sˈʌbsᵻkwənt pˌʌblɪkˈeɪʃən, ðə sɚvˈaɪvɪŋ wˈɜːks mˈoʊstli ɹᵻzˈɛmbəl lˈɛktʃɚ nˈoʊts nˌɑːt ɪntˈɛndᵻd fɔːɹ pˌʌblɪkˈeɪʃən.