" The worldly-wise must be able to make everything done purely for themselves look as if it were done for the sake of others, who will then feel very much indebted to them and be willing to do as they wish. Many a man appears easy-going, modest and obliging, as if he lived entirely for others, and yet his mind is set on nothing but his precious self, to whom those others are useful without knowing it. "

― E.T.A. Hoffmann , The Life and Opinions of the Tomcat Murr