What holds a free society together? Not law alone, and not self-interest — but something older and deeper that the classical tradition called civic friendship: the bonds of genuine goodwill and common purpose that bind citizens to one another and make a republic possible. This book recovers that idea, and argues that without it, neither natural law theory nor political life can be adequately understood.

Michael Pakaluk brings together more than two decades of scholarship on Aristotle, Aquinas, and the American Founding to show that the classical conception of natural law is fundamentally different in kind from the modern theories that have displaced it. Where contemporary natural law and liberal political theory — in their best-known versions — begin from abstract principles of practical reason, the classical tradition begins from human nature itself: from our constitution as social beings, equipped by nature and Providence to live together, and oriented toward civic friendship as the proper realization of that nature.

The argument moves across three great traditions. In Aristotle, civic friendship is the telos of political life — not an ornament added to justice, but its consummation, the common good understood as a shared form of life. In Aquinas, natural law is the rational creature's participation in divine providence, its precepts providing not a checklist of obligations but starting-points for the cultivation of virtue and the perfection of character. In the American Founders — above all in John Adams, whose Aristotelian convictions Pakaluk examines with care — the ideals of natural sociability were neither decorative nor derivative, but the animating principles of the republican experiment itself.

The result is a vision at once ancient and urgently contemporary. At a moment of deepening civic fracture, Walk in the Good Way makes the case that the path to a stable and vigorous free society runs through the recovery of something we have nearly forgotten: that we are, by nature, made for life together — and that nature itself shows us how