María Zambrano (1904–91) is widely regarded as one of the most original Spanish thinkers of the twentieth century. Her biggest contribution to intellectual history is undoubtedly her poetic reason and her unique attempt to overcome the limiting coordinates of the framework of rationality established by the Enlightenment. Having spent forty-five years in exile, the relevance of this Spanish Republican thinker has only been recognised in recent decades. The purpose of this monograph is to reveal the political dimension inherent to Zambrano’s proposal for an alternative rationality through interrogation of existing assumptions regarding Zambrano’s thought.