Who said what when?
Ever wonder when a phrase made it into written use? Enter a word or phrase (or two or three) and see how popular the item was over time. You can even click on the date range and see titles, and snippet view of works that feature your search phrase.
"When you enter phrases into the Google Books Ngram Viewer, it displays a graph showing how those phrases have occurred in a corpus of books (e.g., "British English", "English Fiction", "French") over the selected years. "