A competent and self-confident person is incapable of jealousy in anything. Jealousy is invariably a symptom of neurotic insecurity.
Never appeal to a man's better nature. He may not have one. Invoking his self-interest gives you more leverage.
I don't trust a man who talks about ethics when he is picking my pocket. But if he is acting in his own self-interest and says so, I have usually been able to work out some way to do business with him.
A pacifist male is a contradiction in terms. Most self-described pacifists are not pacific; they simply assume false colors. When the wind changes, they hoist the Jolly Roger.
Reason is poor propaganda when opposed by the yammering, unceasing lies of shrewd and evil and self-serving men.
Beware of altruism. It is based on self-deception, the root of all evil.
If tempted by something that feels altruistic, examine your motives and root out that self-deception. Then, if you still want to do it, wallow in it!