The finest manners in the world are awkwardness and fatuity, when contrasted with a finer intelligence.
 Henry David Thoreau, Life Without Principle (1863). copy citation

Context

“Mere country-bumpkins, they betray themselves, when any more important question arises for them to settle, the Irish question, for instance,—the English question why did I not say? Their natures are subdued to what they work in. Their "good breeding" respects only secondary objects. The finest manners in the world are awkwardness and fatuity, when contrasted with a finer intelligence. They appear but as the fashions of past days,—mere courtliness, knee-buckles and small-clothes, out of date. It is the vice, but not the excellence of manners, that they are continually being deserted by the character;” source