Freedom does not belong to the order of naltural inclinations but to the order of being because it is the tendency or disposition of man toward perfection. It is not that freedom finds itself sense and plenitude. It is instead and onlological dimension of the himan being. The choice of evil is only possible as a distortion of freedom. The limit of freedom is human dignity or the eminence of being which in turn presupposes an "ought to be". Freedom is freedom for good. Dignity is not neutral. It is a valuation criterion referred to the eminence of man's goodness. The person is a demanding creature. In certain aspects he must be. The "ought to be" is the good that  constitudes the perfection or realization of man. Human dignity is, consequently, objetive criterion of goodness and od the lawfulness of his acts in relation with himself and with others.