In the alchemy of man's soul almost all noble attributes--courage, honor, love, hope, faith, duty, loyalty, etc.--can be transmuted into ruthlessness. Compassion alone stands apart from the continuous traffic between good and evil proceeding within us. Compassion is the antitoxin of the soul: where there is compassion even the most poisonous impulses remain relatively harmless. Nature has no compassion. It is, in the words of William Blake, "a creation that groans, living on the death; where fish and bird and beast and tree and metal and stone live by devouring." Nature accepts no excuses and the only punishment it knows is death.