In 1902 Fields was appointed to the position of lecturer at the University of Toronto where he remained until his death, although he frequently visited Europe where he was acquainted with many national leaders. For example he attended a dinner party given by the King of Sweden in 1912.
Sa 1,902 Fields ay hihirangin upang angkinin ang posisyon ng lektor sa University of Toronto kung saan siya ay nanatili hanggang sa kanyang kamatayan, kahit na siya madalas bumisita sa Europa kung saan siya ay acquainted sa maraming mga pambansang lider. Halimbawa, nag-aral siya ng isang hapunan partido na ibinigay ng hari ng Sweden sa 1912.