“I often think how necessary it is for men who are vested with trust and great power to be inspired with the understanding of what seems to be an obvious truism, which is that we live on one planet and it is not in man’s power—at least in the foreseeable future—to change that. In a certain sense there is an analogy here—I like this comparison—with Noah’s Ark where both the ‘clean’ and the ‘unclean’ found sanctuary. But regardless of who lists himself with the 'clean' and who is considered to be 'unclean,' they are all equally interested in one thing and that is that the Ark should successfully continue its cruise. And we have no other alternative: either we should live in peace and cooperation so that the Ark maintains its buoyancy, or else it sinks. Therefore we must display concern for all of mankind, not to mention our own advantages, and find every possibility leading to peaceful solutions of problems.”

-Nikita Khrushchev,
Letter To President John F. Kennedy,
November 29, 1961