A seeming ignorance is very often a most necessary part of worldly knowledge. It is, for instance, commonly advisable to seem ignorant of what people offer to tell you; and when they say, Have not you heard of such a thing? to answer No, and to let them go on, though you know it already.
Lord ChesterfieldThe insolent civility of a proud man is, if possible, more shocking than his rudeness could be; because he shows you, by his manner, that he thinks it mere condescension in him; and that his goodness alone bestows upon you what you have no pretense to claim.
Lord Chesterfield