Classicly

This book, Northern Lights, belongs to an epoch which is a generation later than that in which Pierre and His People moved. The conditions under which Pierre and Shon McGann lived practically ended with the advent of the railway. From that time forwards, with the rise of towns and cities accompanied by an amazing growth of emigration, the whole life lost much of that character of isolation and pathetic loneliness which marked the days of Pierre. -- Introduction by author.