I. The relevance and meaning of the conceptual and justificatory problem.
1.- Introduction. The distinction and relationship between the concept and the foundation of fundamental rights.
1.1.- Terminological problems: vagueness, ambiguity and emotionality.
1.2.- The concept and the foundation: their relationship.
1.3.- The different concepts: natural rights, human rights, moral rights and fundamental rights.
2.- The problems of the foundation of rights.
2.1.- On the possibility of foundation.
2.2.- On the necessity of the foundation.
2.3.- On the justification of the foundation.
2.4.- On the unity of the foundation.
3.- The relevance of the conceptual and foundational problem: special attention to its repercussion in legal systems.
3.1.- The guarantee system: legislation and jurisdiction.
3.2.- Interpretation: legal interpretation and constitutional interpretation.
4.- Ethics, Power and Law: rights as an expression of the public ethics of Modernity.
4.1.- The dynamism of freedom.
4.2.- Social, political and juridical freedom.
4.3.- Ethics (public ethics of Modernity), Power (Rule of Law) and Law (fundamental rights).
II. Proposals on the foundation of rights.
1.- Abstract and historical proposals.
2.- Moral and legal proposals.
2.1.- The iusnaturalist foundation of natural rights.
2.2.- The theory of moral rights.
2.3.- The dualist and trialist foundations of fundamental rights.
3.- Liberal, communitarian and republican proposals.
III. Values, principles and rights.
1.- Freedom.
2.- Equality.
3.- Solidarity.
IV.- Approach to current challenges to human rights from the perspective of the concept and foundation of rights.
1.- New technologies.
2.- Deinstitutionalization.