It's a very cheery thing to come into London by any of these lines which run high and allow you to look down upon the houses like this."I thought he was joking, for the view was sordid enough, but he soon explained himself."Look at those big, isolated clumps of buildings rising up above the slates, like brick islands in a lead-coloured sea.""The board-schools.""Light-houses, my boy! Beacons of the future! Capsules with hundreds of bright little seeds in each, out of which will spring the wiser, better England of the future.