It is the act of an ill-instructed man to blame others for his own bad condition; it is the act of one who has begun to be instructed, to lay the blame on himself; and of one whose instruction is completed, neither to blame another, nor himself.
EpictetusI laugh at those who think they can damage me. They do not know who I am, they do not know what I think, they cannot even touch the things which are really mine and with which I live.
Epictetus