Thinking Antagonism is brilliantly conceived and lucidly written. It is a clear introduction to the important field of political ontology, a worthy testament to the intellectual legacy of Ernesto Laclau, and a significant radicalization of his central intuition. Marchart''s command of the material underwrites a complex and compelling argument for restoring the concept of antagonism to its central place in radical democratic theory. To think antagonism is to identify not an object to be known but a moment of insistent negativity that is the irreducible condition of political resistance. This book should be read by anyone interested in the future of the Left and the possibilities of critical political thought.