The texts of Boris Hessen and Henryk Grossmann assembled in this volume
are important contributions to the historiography of the Scienti?c
Revolution and to the methodology of the historiography of science. They
are of course also historical documents, not only testifying to Marxist
discourse of the time but also illustrating typical European fates in
the ?rst half of the twentieth century. Hessen was born a Jewish subject
of the Russian Czar in the Ukraine, participated in the October
Revolution and was executed in the Soviet Union at the beginning of the
purges. Grossmann was born a Jewish subject of the Austro-Hungarian
Kaiser in Poland and served as an Austrian of?cer in the First World
War; afterwards he was forced to return to Poland and then because of
his revolutionary political activities to emigrate to Germany; with the
rise to power of the Nazis he had to ?ee to France and then
Americawhilehisfamily, whichremainedinEurope,
perishedinNaziconcentration camps. Our own acquaintance with the work of
these two authors is also indebted to historical context (under
incomparably more fortunate circumstances): the revival of Marxist
scholarship in Europe in the wake of the student movement and the p-
fessionalization of history of science on the Continent. We hope that
under the again very different conditions of the early twenty-?rst
century these texts will contribute to the further development of a
philosophically informed socio-historical approach to the study of
scienc