There is a sense in which those mists never rose from off our journey; and from that time forth they lie very densely in my note-book. As long as the Oise was a small rural river, it took us near by people's doors, and we could hold a conversation with natives in the riparian fields. But now that it had grown so wide, the life along shore passed us by at a distance. It was the same difference as between a great public highway and a country by-path that wanders in and out of cottage gardens. We now lay in towns, where nobody troubled us with questions; we had floated into civilized life, where people pass without salutation. In sparsely inhabited places, we make all we can of each encounter; but when it comes to a city, we keep to ourselves, and never speak unless we have trodden on a man's toes. In these waters we were no longer strange birds, and nobody supposed we had travelled farther than from the last town. I remember, when we came into L'Isle Adam, for instance, how we met dozens of pleasure-boats outing it for the afternoon, and there was nothing to distinguish the true voyager from the amateur, except, perhaps, the filthy condition of my sail. The company in one boat actually thought they recognized me for a neighbour. Was there ever anything more wounding? All the romance had come down to that. Now, on the upper Oise, where nothing sailed as a general thing but fish, a pair of canoeists could not be thus vulgarly explained away; we were strange and picturesque intruders; and out of people's wonder sprang a sort of light and passing intimacy all along our route. There is nothing but tit-for-tat in this world, though sometimes it be a little difficult to trace: for the scores are older than we ourselves, and there has never yet been a settling-day since things were. You get entertainment pretty much in proportion as you give. As long as we were a sort of odd wanderers, to be stared at and followed like a quack doctor or a caravan, we had no want of amusement in return; but as soon as we sank into commonplace ourselves, all whom we met were similarly disenchanted. And here is one reason of a dozen, why the world is dull to dull persons. In our earlier adventures there was generally something to do, and that quickened us. Even the showers of rain had a revivifying effect, and shook up the brain from torpor. But now, when the river no longer ran in a proper sense, only glided seaward with an even, out-right, but imperceptible speed, and when the sky smiled upon us day after day without variety, we began to slip into that golden doze of the mind which follows upon much exercise in the open air. I have stupefied myself in this way more than once; indeed, I dearly love the feeling; but I never had it to the same degree as when paddling down the Oise. It was the apotheosis of stupidity.