“Letter to Elias Shipman and others of New Haven (12 July 1801). Paraphrased in John B. McMaster, History of the People of the United States (ii. 586): "One sentence will undoubtedly be remembered till our republic ceases to exist. 'No duty the Executive had to perform was so trying,' [Jefferson] observed, 'as to put the right man in the right place.”
Source: Wikiquote