Emotional pain causes stress, stress causes real damage to the brain and body, and so the callous not only decay themselves yet others too.
The callous will always be truncated from full potential, for it is the empathy centre's creative perspective taking and motivation that builds true genius.
The callous heart destroys creation and then complains of its own situation.
Callous is the call of the emotionally cold and indifferent, to act as if the emotional reality and pains of others is of no consequence.
Callous is the lousy heart that has disintegrated, that has integrated sin into its basic operating system.
The callous give up on the sixth sense that is the key to human evolution.
The callous heart destroys the gold it fails to comprehend.
The callous nature unconfronted as an internal battle for winning, acts as a poison to the self and society.