aɪ θˈɪŋk, bˌʌt aɪ ˈoʊnli θˈɪŋk, aɪ nˈoʊ ɐ fjˈuː ʌvðə ɹˈiːzənz: hiː wˈɔntᵻd tə dˈuː ɐ nˈuː kˈaɪnd ʌv wˈɜːk; hiː wʌz sˈɪk fɔːɹ mˈɛnɪəv ðoʊz jˈɪɹz ænd ɡˌɛɾɪŋ sˈɪkɚ.
I think, but I only think, I know a few of the reasons: he wanted to do a new kind of work; he was sick for many of those years and getting sicker.