Charles Taylor is one of the most influential contemporary philosophers, arguably the most important living political philosopher writing in English. assesses Taylor’s thought and its relevance to contemporary political challenges, especially religion and secularity, multicultural diversity, political alienation and demands for greater democracy. Craig Browne and Andrew Lynch outline Taylor's key concepts and highlight the substantive applications of his ideas. They explain the substantial differences between Taylor’s conception of social imaginaries and that of Cornelius Castoriadis, and contrast Taylor’s account of the political form of modernity with Claude Lefortäs.