Recent work on the philosophy of Hermann Cohen (1848-1914), founder of the Marburg School of Neo-Kantianism, has appeared in three distinct circles in the English-speaking philosophical context. Cohen re-interpreted Kant's a priori to take scientific developments into account. Michael Friedman acknowledges that the later development of this view by Cohen's intellectual heir Ernst Cassirer influenced Friedman's work on the dynamic a priori, especially in the history and philosophy of science. Owing to Cohen's links to Franz Rosenzweig, scholars have begun to investigate Cohen's philosophy with reference to Derrida, Benjamin, Habermas, and Levinas and the philosophy of responsibility. And there is increasing interest in analyzing Cohen's influence on Deleuze and Badiou, particularly in the areas of ethics and aesthetics.