"I have for a long time been of opinion that the quantity of noise anyone can comfortably endure is in inverse proportion to his mental powers, and may therefore be regarded as a rough estimate of them. Therefore, when I hear dogs barking unchecked for hours in the courtyard of a house, I know what to think of the mental powers of the inhabitants. The man who habitually slams doors instead of shutting them with the hand, or allows this to be done in his house, is not merely ill-mannered, but also coarse and narrow-minded."