“Uma Teoria da Justiça" de John Rawls surgiu como uma proposta renovada para abordar a equidade das instituições. Uma característica que faz o conceito de Rawls distinto é a aplicação de sua teoria a um escopo restrito: instituições que constituem a estrutura básica da sociedade. Além disso, esse conceito de justiça deve ser imparcial em relação às concepções de Bem dos indivíduos. Essa dissertação explora as razões que levaram Rawls e seus seguidores a escolher essa abordagem e sugere possíveis desafios não resolvidos por sua teoria. / “A Theory of Justice" of John Rawls emerges as a renewed proposition to approach the fairness of institutions. A distinctive characteristic of Rawls concept is the application of his theory towards a limited scope: institutions that constitute the basic structure of the society. Moreover, such concept of justice must be impartial in regard to individuals’ conceptions of good. This dissertation explores the reasons that led Rawls and his followers to choose this approach, and suggests possible challenges unsolved by his theory.

“Uma Teoria da Justiça” de John Rawls surgiu como uma proposta renovada para abordar a equidade das instituições. Uma característica que faz o conceito de Rawls distinto é a aplicação de sua teoria a um escopo restrito: instituições que constituem a estrutura básica da sociedade. Além disso, esse conceito de justiça deve ser imparcial em relação às concepções de Bem dos indivíduos. Essa dissertação explora as razões que levaram Rawls e seus seguidores a escolher essa abordagem e sugere possíveis desafios não resolvidos por sua teoria. / “A Theory of Justice” of John Rawls emerges as a renewed proposition to approach the fairness of institutions. A distinctive characteristic of Rawls concept is the application of his theory towards a limited scope: institutions that constitute the basic structure of the society. Moreover, such concept of justice must be impartial in regard to individuals’ conceptions of good. This dissertation explores the reasons that led Rawls and his followers to choose this approach, and suggests possible challenges unsolved by his theory.

Le principe d'impartialité est essentiellement traité par les juristes français sous l'angle de l'imposante jurisprudence de la Cour européenne des droits de l'homme. Néanmoins, l'origine internationale de ce principe restait inexplorée. Cette étude montre que l'impartialité est une exigence récurrente dans les discours sur la justice, et ce depuis l'Antiquité. Malgré son évidence philosophique, la juridicisation du principe d'impartialité s'est révélée sinueuse et inégale à travers l'histoire et les cultures juridiques (Common law/Civil law). Les particularités du régime politique du Royaume-Uni expliquent ainsi l'applicabilité directe du principe dans le trial dès les origines de la Common law. En revanche, en droit français, sa consécration explicite fut tardive et provoquée par l'article 6 CEDH, même si le juge national avait su contourner le silence des textes pour lui procurer une protection indirecte. À coté de ces décalages entre les États, une brève analyse de l'histoire du droit international suffit à constater la présence du principe dans l'ordre juridique international dès le début du XXe siècle. L'étude du principe d'impartialité de la justice illustre alors parfaitement la problématique des rapports de systèmes. Plusieurs interactions importantes peuvent être signalées. Dans un premier temps, le droit international a eu besoin du principe d'impartialité afin de légitimer la construction de son propre ordre, qui passait inévitablement par la juridictionnalisation. Dans un deuxième temps, après avoir accompli sa fonction structurante, il est devenu partie intégrante du droit international substantiel tout en voyant son objet modifié / The principle of impartiality is essentially treate by the French jurists under the angle of the impressive jurisprudence of the European Court of Human Rights. Nevertheless, the international origin of this principle remained unexplored. This study shows that the impartiality is a recurring requirement in the speeches on the justice, and it since the Antiquit. In spite of its philosophic obvious fact, the juridicisation of the principle of impartiality showed itself sinuous and uneven through the history and the legal cultures (Civilian /Common law). The peculiarities of the political system of the United Kingdom so explain the direct applicability of the principle in the motocross from the origins of Common law. On the other hand, in French law, its explicit consecration was late and provoked by the article 6 EHCR