When important social institutions weaken, what should we preserve, repair, or rebuild? In The Structures We Still Need, I consider the practical forms through which communities transmit values and sustain human flourishing. Households, voluntary associations, local communities, and public institutions all have work to do, but none is beyond criticism or reform. We need not recover every custom of the past to recognize the functions that good societies require: formation, responsibility, stewardship, solidarity, and restraint. This book moves from complaint toward construction. The question is not simply what has disappeared, but what must exist for the goods we cherish to endure.