A Hobbesian Model. If ever possible the modelling of the abstract pattern of the item of a philosophical theory belongs, alas!, to its interpretation. In the case of the Hobbesian theory of the natural right and the natural laws (Lev c. XIV, XV) the mathematics of the covenant-model and of its interpretation by an model of preferences and utilities is a neglect task till now. Its performence shows certain shortcomings of the Hobbesian theory.