In philosophy, architectonics is used figuratively (after architecture ) to mean "foundational" or "fundamental", supporting the structure of a morality, society, or culture. In Kant's architectonic system there is a progression of phases from the most formal to the most empirical [1] C. S. Peirce adapted the Kantian concept as his blueprint for a pragmatic philosophy. Martial Gueroult wrote of "architectonic unities". Michel Foucault adapted the concept in his treatise The Archaeology of Knowledge