Did then a single power of my soul remain unexercised?

那么我的灵魂有有一点力量有挥出来呢？

He had a son — an overgrown man with the unexercised intellect of a child, whom he had kept up in that strange way, in order to save him from temptation and error.

他有一儿子——一太大的人，有着孩子般未经锻炼的智力，他以这种奇怪的式抚养他，以免他受到诱惑和错误。