Craig A. Tovey of Science Magazine reviews The Usefulness of Useless Knowledge (Princeton University Press, March 2017) by founding IAS Director Abraham Flexner with a companion essay by current IAS Director Robbert Dijkgraaf. The book, Tovey writes, "makes a strong case for science done for science's sake," reflecting on Flexner's advocacy for "unfettered inquiry that, paradoxically and unexpectedly, has often resulted in extraordinary utility." Dijkgraaf's essay, Tovey writes, "weaves Flexner’s personal...