He was twenty-five again, and strong. He was so strong. All of the sorrows in his life—all of the doubts and deaths and disappointments—all of them had been for this. They were the fires that burned in his chest. They were his strength. (14.5)
In this book, strength seems to come from youth (which is such a bummer that we need to take a nap), and this quote demonstrates that connection once more. But what's really interesting about this passage is how it connects Abe's strengths to "All of the sorrows in his life." Is that crazy? Are Abe's sadnesses really his strengths? How can that be?