When talking about loved ones, John often alludes to events he explains only gradually in the course of writing to his son, so readers don’t necessarily have all the information they would need to follow his train of thought. Here, for instance, John indicates that his father was a man of principle whom he admired. But at the same time, he implies that for all their good intentions, the two had a strained relationship. This tension between personal conviction and family will be explored throughout the book. With his remark about ignorance, John further suggests that just knowing something or someone well—even a close family member—doesn’t mean you truly understand them.