James Alexander Thom said this quote
“ A novel, or so-called “fiction,” if deeply researched and conscientiously written, might well contain as much truth as a high-school history textbook approved by a state board of education. But having been designated “historical fiction” by its publisher, it is presumed to be less reliably true than that textbook. If fiction were defined as “the opposite of truth,” then much of the content of many approved historical textbooks could be called “historical fiction.”But fiction is not the opposite of truth. Fiction means “created by imagination.” And there is plenty of evidence everywhere in literature and art that imagination can get as close to truth as studious fact-finding can. ”