I lurk in unseen places and do most of my work silently.
You are warned against me, but you do not always heed.
I am relentless.
I am everywhere—in the house, on the streets, in the factory, at the railroad crossings, and on the sea.
I bring sickness, degradation and death, yet few people seek to avoid me.
I destroy, crush, or maim; I give nothing, but take all.
I am your worst enemy.
I spare no one, and I find my victims among the rich and poor alike, the young and old, the strong and weak. Widows and orphans know me.
I cast my shadow over every field of activity, from the turning of the grindstone to the moving of a railroad train, from the rocking of a boat to the spinning of a top.