美国历史学家大卫·麦卡洛认为亨利所说的这句话,源自约瑟夫·艾迪生于1712年创作的剧作《加图悲剧(英语:Cato, aTragedy)》第二章第4幕的台词,原文是“It is not now a time to talk of aught. But chains or conquest; liberty
and Vietnam, 1941–1975 (1997). Sorley, Lewis, A Better War: The Unexamined Victories and Final Tragedy of America's Last Years in Vietnam (1999), based