In a December 1962 letter to brother Julian, summarizing a paper he had presented in Santa Barbara, he wrote, "What I said was that if we didn't pretty quickly start thinking of human problems in ecological terms rather than in terms of power politics we should very soon be in a bad way.
ɪn ɐ dᵻsˈɛmbɚ nˈaɪntiːnhˈʌndɹɪd sˈɪksti tˈuː lˈɛɾɚ tə bɹˈʌðɚ dʒˈuːliən, sˈʌmɚɹˌaɪzɪŋ ɐ pˈeɪpɚ hiː hæd pɹɪzˈɛntᵻd ɪn sˈæntə bˈɑːɹbɚɹə, hiː ɹˈoʊt, "wˌʌt aɪ sˈɛd wʌz ðæt ɪf wiː dˈɪdnt pɹˈɪɾi kwˈɪkli stˈɑːɹt θˈɪŋkɪŋ ʌv hjˈuːmən pɹˈɑːbləmz ɪn ˌɛkəlˈɑːdʒɪkəl tˈɜːmz ɹˈæðɚ ðɐn ɪn tˈɜːmz ʌv pˈaʊɚ pˈɑːlətˌɪks wiː ʃˌʊd vˈɛɹi sˈuːn biː ɪn ɐ bˈæd wˈeɪ.