The quote by Henry James in "The Spoils of Poynton" reflects the idea that one should not be shocked by the foolish actions of those who are inherently foolish. It suggests a level of acceptance regarding human behavior, particularly that which is irrational or misguided, implying that such traits are ingrained and predictable in certain individuals.

This perspective encourages a sense of resignation towards the folly of others, reminding readers that expecting wisdom or prudence from certain people is often misplaced. Instead, it serves as a caution to understand human nature and acknowledge that foolishness can be a consistent trait in those born with it.