Courage is not the absence of fear, but the conquest of it.
Knowledge is essential to conquest; only according to our ignorance are we helpless. Thought creates character. Character can dominate conditions. Will creates circumstances and environment.
The tools of conquest do not necessarily come with bombs and explosions and fallout. There are weapons that are simply thoughts, attitudes, prejudices -- to be found in the minds of men. For the record, prejudices can kill and suspicion can destroy, and a thoughtless, frightened search for a scapegoat has a fallout all its own -- for the children and the children yet unborn. And the pity of it is that these things cannot be confined to the Twilight Zone.