Na linha do recente debate sobre a cidadania surgem novamente algumas questões fundamentais que se nos colocam a propósito do conflito entre liberdade e igualdade. O presente artigo pretende reflectir sobre os problemas de igualdade económica, social e política e as exigências de justiça e de liberdade que os acompanham, tomando como centro as capacidades e as necessidades de cada um. Nesse sentido, a autora recorre sobretudo às aportações de Martha C. Nussbaum e de Iris M. Young. /// Following the (...) thread of the recent debate on citizenship, there are some some fundamental questions that emerge regarding the conflict between liberty and equality. This paper constitutes a reflection about the problems of social, political and economic equality and the demands of justice and liberty that they involve. The analysis is centered on the capabilities and the needs of each person. In order to do this, the author refers in particular the conceptions developed by Martha C. Nussbaum and Iris M. Young. (shrink)