（参考資料：Kennedy, John (1961年9月25日). “Address Before the General Assembly of the United Nations”. Selected Speeches of John F. Kennedy. Columbia Point, Boston MA 02125, USA: John F. Kennedy Presidential Library and Museum. 2011年8月4日時点のオリジナルよりアーカイブ。2011年8月5日閲覧。 “Today, every inhabitant of this planet must contemplate the day when this planet may no longer be habitable. Every man, woman and child lives under a nuclear sword of Damocles, hanging by the slenderest of threads, capable of being cut at any moment by accident or miscalculation or by madness.”）
（参考資料：Kennedy, John (1961年9月25日). “Address Before the General Assembly of the United Nations”. Selected Speeches of John F. Kennedy. Columbia Point, Boston MA 02125, USA: John F. Kennedy Presidential Library and Museum. 2011年8月4日時点のオリジナルよりアーカイブ。2011年8月5日閲覧。 “Today, every inhabitant of this planet must contemplate the day when this planet may no longer be habitable. Every man, woman and child lives under a nuclear sword of Damocles, hanging by the slenderest of threads, capable of being cut at any moment by accident or miscalculation or by madness.”）
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（参考資料：Kennedy, John (1961年9月25日). “Address Before the General Assembly of the United Nations”. Selected Speeches of John F. Kennedy. Columbia Point, Boston MA 02125, USA: John F. Kennedy Presidential Library and Museum. 2011年8月4日時点のオリジナルよりアーカイブ。2011年8月5日閲覧。 “Today, every inhabitant of this planet must contemplate the day when this planet may no longer be habitable. Every man, woman and child lives under a nuclear sword of Damocles, hanging by the slenderest of threads, capable of being cut at any moment by accident or miscalculation or by madness.”）
