But they could not set eyes on an obstacle without amusing themselves by crossing it, either in a running jump or with both feet together, because they were all filled to the brim, exuberant with that youth which we need so urgently to spend that even when we are unhappy or unwell, obedient rather to the necessities of our age than to the mood of the day, we can never pass anything that can be jumped over or slid down without indulging ourselves conscientiously, interrupting, interspersing our slow progress—as Chopin his most melancholy phrase—with graceful deviations in which caprice is blended with virtuosity.