Auguries of Innocence by William Blake.

Part 2 of 7.

The wild

deer, wand'ring here & there,
Keeps the Human Soul from Care.
The Lamb misus'd breeds public strife
And yet forgives the Butcher's Knife.
The Bat that flits at close of Eve
Has left the Brain that won't believe.
The Owl that calls upon the Night
Speaks the Unbeliever's fright.
He who shall hurt the little Wren
Shall never be belov'd by Men.
He who the Ox to wrath has mov'd
Shall never be by Woman lov'd.
The wanton Boy that kills the Fly
Shall feel the Spider's enmity.
He who torments the Chafer's sprite
Weaves a Bower in endless Night.
The Catterpillar on the Leaf
Repeats to thee thy Mother's grief.
Kill not the Moth nor Butterfly,
For the Last Judgement draweth nigh.