Avila, H: Theory of Legal Principles

that they can and ought to be balanced and have a dimension of weight; rather, he proves that this is fundamentally true of rules as well. Consequently he looks for the distinction between rules and principles somewhere else, and finds it firstly in the fact that rules have a direct description of a behavior or a jurisdiction assignment as its object, aiming only indirectly to the realization of a goal, whereas principles directly aim to the realization of a goal and only indirectly influence the behavior or jurisdiction assignments required to achieve such goals. Against that backdrop, the author furthers additional criteria and develops a different proposal of his own to distinguish between rules and principles.Next, he expands his concept with an additional plane, adding postulates to the rules and principles. In doing so, he has in mind criteria such as proportionality, reasonableness, and legal efficiency and safety, which are usually called principles, quite often without much thought. The author faces such use of language and such way of thinking by arguing that postulates, differently from principles in a more strict sense, do not aim to the direct realization of a goal; on the contrary, they perform the distinct function of prescribing and guiding some thought and argumentation processes, thus structuring the way rules and principles are applied. Hence, postulates are not located on the plane of rules and principles, but on a metaplane, which is the reason the author calls them second degree norms or application norms.Notwithstanding the high level of abstraction and the density of the language and argumentation in a large part of the work, the presentation is enriched very elegantly with practical examples, taken from the Brazilian and German Law and found mostly in Constitutional and Tax Law, in accordance with the focus of the author's scientific work in substantive Law. Such fact also outlines the connection of his interest in legal theory to an ample legal-practical foundation - a combination that once again proves its fecundity in this work.This is the reason it is my desire that this book be received in the German discussion about the Theory of Law with the interest and relevance it deserves.Munich, August 2005 Prof. Dr. Dr. h.c. mult. Claus-Wilhelm CanarisProfessor of Civil Law and Science of Law Methodologyat the University of Munich, Germany.Doctor Honoris Causa at the Universities of Lisbon, Autonomous of Madrid, Athens and Graz. Foreword to the Brazilian Edition (Teoria dos Princípios)I called Humberto as soon as I finished reading the book originals to tell him about my sincere admiration for the intellectual work it synthesized. Humberto has developed an extremely important contribution to what I would resort to French to call a nettoyage of jurisprudence. A conference I attended quite recently presented the distinction between interpretation methods, whether grammatical, teleological and so on. I suddenly realized that the lecturer was more than two hundred years old, truly an unburied corpse, to the sound of Ravel's Bolero... Humberto, as José Régio would say it, loves the distances and the mirages, the cliffs, the rapids, the deserts. When the soul is not small - quoting from Régio to Pessoa - we shout the wonderful "I am not going this way; I am going only where my steps take me." This is it - I told Humberto - "your book is a walk on your own steps." This book is personally his.This is why this book is essential and truly breaks a trend that makes principles cliché, rocking the ground of the "self-geniuses." This is what they fear: when questioned, they react like one fighting for a life saver of some sort. Their problem is they have a single buoy, anchored to the bibliography of ages past - and poorly understood if more recent. They are common townsfolk, without a bibliography... Let me tell a story. On the last day of the contest I took to become a Full Professor at Largo de São Francisco, as soon as the results were announced, another Professor, who had come from a different State and happened to be there, greeted me and said "This is great! Now you can sell your books!" To this day I do not know whether he meant it in jest or not. But I have the impression that some of them have traded their books long ago, and the buyers can now enjoy untouched old books never read before... Humberto's book fascinates me. It confirms my beliefs that interpretation is the interpretation/application of texts and facts and that balancing is a moment within the interpretation/application of the Law.His guidelines for the analysis of principles - item 2.4.4 - make me see even more clearly that the Law is not interpreted in slices. The proposition of a heuristic distinction between rule and principle - and postulates - and an "inclusive alternative" is extremely rich. And the tripartite model (rule, principle and applied normative postulate - item 3) illuminates the terrible darkness in which we know who gets lost. The exam of the postulate of proportionality is simply superb. The text is multiple and varied, always in a positive way. The expounding of the principle of morality - item 2.4.5 - would have to be the first reading assignment for the half-baked "jurisprudents" who think morality replaces the ethic of statutory legality with another one, opposed to the statutes... What some have said in such matter is regrettable. This is why I took the initiative to tell Humberto that I would immensely love to write the foreword of this book - because then I would indirectly participate in the substantial contribution it brings up to our legal thinking. Being beside him makes me intellectually noble. Prof. Dr. Eros Roberto GrauFull Professor of Economic Law at the University of