Noga Arikha in The White Review:
Very few writers in the twenty-first century are polymaths of the sort that previous centuries sometimes spawned – those who knew about all the subjects that mattered at the time, while still producing original work. Specialisation and the multiplication of fields and subfields of research, in both the humanities and the sciences, has rendered such breadth nearly impossible. Siri Hustvedt, however, is an exception: she is a polymath for our times, fluent in multiple specialised discourses, but whose mode is artistic.
More here.