Taking the “Doctrine of Method” from Immanuel Kant’s Critique of Pure Reason as the methodological structure with which to explore the science of thermodynamics, this session will ask how do the physical concepts of “energy” and “entropy” function as Ideas in the Kantian sense? That is, is it possible to construct an architectonics of thermodynamics where the two first laws of thermodynamics (1° the conservation of energy and 2° the unidirectional increase in entropy) guide an inquiry our means of judging phenomena. Furthermore, can a thermodynamic architectonics once constructed subsequently serve as the theoretical ground for a practical environmental philosophy? In other words, how should we behave energetically and entropically in the world?