Hamid Dabashi in the New York Times:
Though it is common to lament the shortcomings of reading an important work in any language other than the original and of the “impossibility” of translation, I am convinced that works of philosophy (or literature for that matter — are they different?) in fact gain far more than they lose in translation.
Consider Heidegger. Had it not been for his French translators and commentators, German philosophy of his time would have remained an obscure metaphysical thicket. And it was not until Derrida’s own take on Heidegger found an English readership in the United States and Britain that the whole Heidegger-Derridian undermining of metaphysics began to shake the foundations of the Greek philosophical heritage. One can in fact argue that much of contemporary Continental philosophy originates in German with significant French and Italian glosses before it is globalized in the dominant American English and assumes a whole new global readership and reality. This has nothing to do with the philosophical wherewithal of German, French or English. It is entirely a function of the imperial power and reach of one language as opposed to others.
More here.