His suppleness even exceeded his strength. Certain convicts who were forever dreaming of escape, ended by making a veritable science of force and skill combined. It is the science of muscles. An entire system of mysterious statics is daily practised by prisoners, men who are forever envious of the flies and birds. To climb a vertical surface, and to find points of support where hardly a projection was visible, was play to Jean Valjean. An angle of the wall being given, with the tension of his back and legs, with his elbows and his heels fitted into the unevenness of the stone, he raised himself as if by magic to the third story. He sometimes mounted thus even to the roof of the galley prison.

He spoke but little. He laughed not at all. An excessive emotion was required to wring from him, once or twice a year, that lugubrious laugh of the convict, which is like the echo of the laugh of a demon. To all appearance, he seemed to be occupied in the constant contemplation of something terrible.

He was absorbed, in fact.