In this study I devote my attention to the significance of the work of the Marquis de Sade in the field of political philosophy. The first part focuses on the definition of the basic principles of de Sade’s politically-orientated reflexion, examining above all the theory of the moral and affective solitude of the human being, and, derived from this, the relativism of all moral judgement. In the second part I indicate - primarily on the basis of the text Yet Another Effort, Frenchman, If You Would Become Republicans - the consequences that flow for human society from these basic postulates: the impossibility of making a social contract and the arbitrary division between sovereign individuals and victims. In the concluding part of the text I attempt to show the extent to which de Sade’s thought is relevant from a certain kind of contemporary political philosophy: I concentrate here on Balibar’s conception of “the inconvertibility of violence”; on Ogilvie’s concept of “man as a write-off”, and also on the concept of bio-power as it is formulated by Michel Foucault in The History of Sexuality, and later by Giorgio Agamben in Homo sacer., Josef Fulka., and Obsahuje poznámky a bibliografii