If we felt that the law itself was our safest refuge, would it not be because even in the most perverted regimes there is a certain hesitancy about writing cruelties, intolerance, and inhumanities into law? And is it not clear that this hesitancy itself derives, not from a separation of law and morals, but precisely from an identification of law with those demands of morality that are the most urgent and the most obviously justifiable, which no man need be ashamed to profess?
Positivism and Fidelity to Law — A Reply to Professor Hart, Lon Fuller, 71 Harv. L. Rev. 630, 637