Right must not live in idleness,
Nor dwell in smug content;
It must be strong, against the throng
Of foes, on evil bent.

Justice must not a weakling be
But it must guard its own,
And live each day, that none can say
Justice is overthrown.

Peace, the sweet glory of the world,
Faces a duty, too;
Death is her fate, leaves she one gate
For war to enter through.

Edgar Albert Guest

http://www.poemhunter.com/poem/preparedness-2/