American gentlemen are a cross between English and French men, and yet really altogether like neither. They are more refined and modest than Frenchmen, and less manly, shy, and rough, than Englishmen. Their brains are finer and flimsier, their bodies less robust and vigorous than ours. We are the finer animals, and they the subtler spirits. Their intellectual tendency is to excitement and insanity, and ours to stagnation and stupidity.

Further Records, 1848-1883: A Series of Letters (ed. 1890)