Gavroche, completely carried away and radiant, had undertaken to get everything in readiness. He went, came, mounted, descended, remounted, whistled, and sparkled. He seemed to be there for the encouragement of all. Had he any incentive? Yes, certainly, his poverty; had he wings? yes, certainly, his joy. Gavroche was a whirlwind. He was constantly visible, he was incessantly audible. He filled the air, as he was everywhere at once. He was a sort of almost irritating ubiquity; no halt was possible with him. The enormous barricade felt him on its haunches. He troubled the loungers, he excited the idle, he reanimated the weary, he grew impatient over the thoughtful, he inspired gayety in some, and breath in others, wrath in others, movement in all, now pricking a student, now biting an artisan; he alighted, paused, flew off again, hovered over the tumult, and the effort, sprang from one party to another, murmuring and humming, and harassed the whole company; a fly on the immense revolutionary coach.

Perpetual motion was in his little arms and perpetual clamor in his little lungs.