But Garry Wills says in the New York Review of Books that [i]n his mad zeal to destroy Camelot ...
Gary Wills is a writer in the New York Review of Books. 
mnli hypothesis: Gary Wills is a writer in the New York Review of Books.  premise: But Garry Wills says in the New York Review of Books that [i]n his mad zeal to destroy Camelot ...