Usar "unenergetic" en una oración

1. Having arrived at such a solution, these people, if they are weak, unenergetic natures, make their peace with such a senseless life, are even proud of their condition, considering their lack of knowledge to be a desert, a sign of culture; but if they are energetic, truthful, and talented natures, such as was Maupassant, they cannot bear it and in one way or another go out of this insipid life