UN General Assembly
1963

5. But it is not only in such a negative sense that we share this common fate. Developments in science and technology have so dramatically increased intercourse in all aspects of human life that the people of one nation are now closely linked with the people of all other nations politically, economically and culturally. As no individual can live in isolation in his own country, no nation can exist in isolation from the rest of the world. In life, and indeed in death too, mankind is linked together by a fate that is one and inseparable. World peace, therefore, is not merely an abstract concept; it is something real and tangible which we ourselves must secure with our own hands. To win it is the duty and the responsibility of all of us now living.