Nagarjuna described an excellent ruler as one who could/should:
Speak the truth, and speak gently to beings.
Be pleasant, unassailable and skilled in public
policy; do not wish to humiliate others;
be independent, and always speak well.
With enmity subdued, be generous,
dignified, and mentally peaceful. Do not
procrastinate, and do not be rash;
do not be dishonest, and be courteous.