Part 1 A liberal leviathan: whiggery; deKanting Rawls; Behemoth and the market; elephants and donkeys. Part 2 Toying with tautologies: equilibrium; games and the social contract; my dear sir, clear your mind of Cant!; time and commitment; really meaning it. Part 3 Squaring the circle: transparent disposition fallacies; the symmetry fallacy; paradox of the twins; Newcomb's paradox; paradox of the surprise test. Part 4 Cardinal comparisons: ordinal and cardinal utility; intrapersonal comparison of utility; interpersonal comparison of utility; Kant and the prisoners' dilemma; Bayesian decision theory; Rawlsian maximin; the game of morals.