In "A Philosopher's Visionary Prediction," published one month before he died, Huxley endorsed training in general semantics and "the nonverbal world of culturally uncontaminated consciousness," writing that "We must learn how to be mentally silent, we must cultivate the art of pure receptivity....
ˈɪn "ɐ fɪlˈɑːsəfɚz vˈɪʒənˌɛɹi pɹɪdˈɪkʃən," pˈʌblɪʃt wˈʌn mˈʌnθ bᵻfˌoːɹ hiː dˈaɪd, hˈʌksli ɛndˈoːɹst tɹˈeɪnɪŋ ɪn dʒˈɛnɚɹəl səmˈæntɪks ænd "ðə nˌɑːnvˈɜːbəl wˈɜːld ʌv kˈʌltʃɚɹəli ʌŋkəntˈæmᵻnˌeɪɾᵻd kˈɑːnʃəsnəs," ɹˈaɪɾɪŋ ðˈæt "wiː mˈʌst lˈɜːn hˌaʊ təbi mˈɛntəli sˈaɪlənt, wiː mˈʌst kˈʌltᵻvˌeɪt ðɪ ˈɑːɹt ʌv pjˈʊɹ ɹᵻsɪptˈɪvᵻɾi....