1920, F. Scott Fitzgerald, "Benediction":This was the Society of Jesus, founded in Spain five hundred years before by a tough-minded soldier who trained men to hold a breach or a salon, preach a sermon or write a treaty, and do it and not argue.
1960 Aug. 29, "Great Britain: Somebody Out There Likes Us," Time:Britain's Peregrine Worsthorne, 36, is a tough-minded Tory journalist with scant regard for preconceived opinions—his own or anybody else's.
2003 March 28, Paul Krugman, "Delusions of Power," New York Times (retrieved 5 July 2012)They considered themselves tough-minded realists, and regarded doubters as fuzzy-minded whiners.