We travel together, passengers on a little space ship,
dependent upon its vulnerable reserves of air and soil.
committed for our safety to its security and peace,
preserved from annihilation only by the care, the work,
and, I will say, the love we give our fragile craft.
We cannot maintain it half-fortunate, half-miserable,
half-confident, half-despairing, half-free
in a liberation of resources undreamed of until this day,
half-slave to the ancient enemies of man.
No craft, no crew, can travel safely with such vast contradictions.
On their resolution depends the survival of us all.

-- ADLAI STEVENSON

[Photograph: Keet Seel, Navajo National Monument]