Political philosophy seems often to reside at a distance from the world. Principles are one thing, politics another, and even our best efforts to 'live up' to our ideals typically founder on the gap between theory and practice. But if political philosophy is unrealizable in one sense, it is unavoidable in another. This is the sense in which philosophy inhabits the world from the start; our practices and institutions are embodiments of theory.... for all our uncertainties about ultimate questions of political philosophy — of justice and value and the nature of the good life — the one thing we know is that we live some answer all the time.

The Procedural Republic and the Unencumbered Self, 1984