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An asteroid or a supervolcano could certainly destroy us, but we also face risks the dinosaurs never saw: An engineered virus, nuclear war, inadvertent creation of a micro black hole, or some as-yet-unknown technology could spell the end of us.

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Science and technology have freed humanity from many burdens and given us this new perspective and great power. This power can be used for the good of all. If wisdom governs our actions; but if the world is mad or foolish, it can destroy itself just when great advances and triumphs are almost without its grasp.


The redeeming feature of war is that it puts a nation to the test. As exposure to the atmosphere reduces all mummies to instant dissolution, so war passes supreme judgment upon social systems that have outlived their vitality.


Air power may either end war or end civilization.


I know something about that war, and I never want to see that history repeated. But, my fellow Americans, it certainly can be repeated if the peace-loving democratic nations again fearfully practice a policy of standing idly by while big aggressors use armed force to conquer the small and weak.


The alternative may well be a civilization plunged into the abyss of annihilation, our earthly habitat transformed into a tragic inferno that even Dante could not imagine. So this is our challenge: to see that war is obsolete, cast into limbo.


Day in and day out we shall heap tons upon tons of high explosives on their war factories and utilities and seaports.