Franz Rosenzweig (1886-1929) studied history and philosophy and conducted a doctoral thesis on "Hegel and the State" under the direction of F. Meinecke. Specialist in German idealism, during World War I initiated the one that would be its masterpiece, the star of the redemption (1921). He was appointed professor of Jewish philosophy and ethics at the University of Frankfurt and in 1921 suffered a process of progressive paralysis of which he died seven years later. Here are brief writings of extraordinary importance in his career: the letter to Rudolf Ehrenberg, known as the "original cell" of The Star of Redemption and The New Thought.
