Carl Schmitt's work - consisting of polemical moves in immediate intellectual and political contexts - is not usually thought of as forming a recognizable system. A Philosophy of Concrete Life challenges this interpretation. In this book, the author demonstrates that there is indeed a common metaphysical core passing through Schmitt's work as a whole. On account of this metaphysical core, the author calls Schmitt's thought a «philosophy of the extreme», thus emphasizing its embeddedness in the late modern tradition of philosophical extremism from Kierkegaard to Foucault. Despite this strictly philosophical objective, however, the book is also a lucid presentation of all of Schmitt's central ideas and concepts from the 1920's to the 1960's, offering a comprehensible introduction to the work of this controversial political thinker.