The presented thesis investigates the problem of the under-representation of women in Brazilian superior courts. The hypothesis is that the absence of gender diversity damages judicial impartiality. The research methodology used has three stages. Firstly, a rigorous investigation of constitutional norms, laws and internal regulations of the judicial selection process of Brazil. Secondly, with inspiration on discourse analysis, an exam of texts on the selection process for electing Superior Court judges. Both methods verify the low presence of women and the gender constraints to reach Brazilian superior courts. The methodologies also demonstrate the current importance of gender as a social differentiation criterion and hence, the current importance of this parameter for the proposed research. The third stage is an interdisciplinary theoretical review on the subject and, more broadly, on the unequal representation of subaltern social groups in positions of power. The analysis identify the contributions already brought to discussion and the gaps that remained, validating the work development. The review also discerns analytical categories valid for the analysis, demonstrating the need for subjects to occupy equal positions in society. The proposed argument is that diversity, in particular women s inclusion in the Judiciary, is prerequisite for judicial impartiality, in the light of procedural law. In other words, the argument is that judicial impartiality depends on the diversity of the Judiciary. The recognition of standpoints based on the social position of individuals and the need for them, when socially relevant, to be conveyed to build stronger objectivities meet democratic postulates. This expands participation and social inclusion in plural societies and it is essential to assure judicial impartiality and the favoring of the plural construction of knowledge. Conclusions present the concept of strong impartiality, which is the result of the application of standpoint theory to a democratic Judiciary and justifies equal gender representation in public policies in Brazilian superior courts.