It comes back to the old question: How can the Bible be so wise in some places and so barbaric in others? And why should we put any faith in a book that includes such brutality?
It is important that when pursing our own self-interest we should be 'wise selfish' and not 'foolish selfish'. Being foolish selfish means pursuing our own interests in a narrow, shortsighted way. Being wise selfish means taking a broader view and recognizing that our own long-term individual interest lies in the welfare of everyone. Being wise selfish means being compassionate.
The simplicity of the universe is very different from the simplicity of a machine. The simplicity of nature is not that which may be easily read but is inexhaustible. The last analysis can no wise be made.
If I determine the enemy's disposition of forces while I have no perceptible form, I can concentrate my forces while the enemy is fragmented. The pinnacle of military deployment approaches the formless: if it is formless, then even the deepest spy cannot discern it nor the wise make plans against it.
One should follow a man of wisdom who rebukes one for one's faults, as one would follow a guide to some buried treasure. To one who follows such a wise man, it will be an advantage and not a disadvantage.
He will have to learn, I know, that all people are not just- that all men and women are not true. Teach him that for every scoundrel there is a hero that for every enemy there is a friend. Let him learn early that the bullies are the easiest people to lick.