ɪn nˈaɪntiːnhˈʌndɹɪd sˈɪksti ˈeɪt, hiː sˈaɪnd ðə "ɹˈaɪɾɚz ænd ˈɛdɪɾɚz wˈɔːɹ tˈæks pɹˈoʊtɛst" plˈɛdʒ, vˈaʊɪŋ tə ɹᵻfjˈuːz tˈæks pˈeɪmənts ɪn pɹˈoʊtɛst ɐɡˈɛnst ðə vˌiːətnˈɑːm wˈɔːɹ.
In 1968, he signed the "Writers and Editors War Tax Protest" pledge, vowing to refuse tax payments in protest against the Vietnam War.