Did then a single power of my soul remain unexercised?

那么我的灵魂有没有一点量没有发挥出来呢？

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.

有一个儿子——一个长得太大的人，有着孩子般未经锻炼的智，这种奇怪的式抚养，免受到诱惑和错误。