Morgan Housel argues that the tangible, quantitative nature of money often causes people to focus greedily on accumulating it rather than intangibly, yet more importantly, strengthening relationships and social bonds. He notes the blindness fertile ground for social debt, as flashy displays intended to impress can instead foster envy, advising avoiding behaviors that lead to resentment. Housel emphasizes marriages evolving beyond pragmatic partnerships to bonds of love filled with unrealistic expectations of problem-solving and emotional support. Ultimately, he contends sustainable relationships stem from spouses devotionally bettering each other's lives without expectation of reciprocity.