The meta-legal approach to sustainability raises the following questions.Firstly: why should sustainability be considered a fundamental legal principle? Sustainability is not just a technical issue, a legal requirement, but also a moral obligation, the basis of which is the protection of future generations and ensuring environmental justice. Secondly: how can sustainability be guaranteed in legal systems without being undermined by short-term economic interests? Here, meta-legal studies help ensure that justice and equality operate in legislation and law enforcement within a framework that ensures the fair distribution of resources between present and future generations. Finally, metajurisprudence also examines how law could respond more effectively to the global problems of sustainability: (i) preserving legal systems and resources, (ii) reconciling public and individual interests, (iii) reinterpreting the relationship between law and justice in intergenerational relations, and (iv) understanding law not only as a static set of rules but also as a dynamic, evolving system. Sustainability requires the development of new legal paradigms that consider complexity, uncertainty, and long-term consequences.

In this extra-legal perspective, three main themes can be examined: (i) justice and intergenerational equality, (ii) predictability and fair burden-sharing, and (iii) corporate social responsibility.