"KINDNESS is unconquerable, so long as it is without flattery or hypocrisy. For what can the most “insolent” man do to you, if you contrive to be kind to him, and if you have the chance gently advise and calmly show him what is right…and point this out tactfully and from a universal perspective. But you must not do this with sarcasm or reproach, but lovingly and without anger in your soul."
Marcus Aurelius