Historical objectivity is a polysemic concept whose genesis and validity merit more non-polemical attention than it usually receives. As a notion that encapsulates the special applications of the language of objectivity to methodological and ethical issues faced by historical scholars all across the human sciences, it will be addressed here from a perspective that combines conceptual history, history of ideas, and theoretical reflection. A peculiar mode of claiming objectivity will be at focus, one that assumes that historians can bring together (...) two attitudes often regarded as mutually contradictory: objectivity and engagement. My main assertion is that from at least the mid 19th century a new avenue for historical thought was opened, as a few intellectuals challenged the traditional requirement that histories be written sine ira et studio; and especially as they did so while at the same time upholding a strong commitment to the value of research. I intend to show how in the mode of engaged objectivity, a disposition like anger, which was traditionally taken to be a historiographical vice, was turned into a potential virtue. This general point will be illustrated with a case study of the underlying motives and the structural configurations of Alexandre Herculano's History of the Origin and Establishment of the Inquisition in Portugal, a confessedly committed, utterly critical, and sometimes furious research-based historical account. (shrink)