Happily saved by his ignorance of Mexican character and sentiment from the mortification of knowing all this, fully conscious that the war was unpopular even with his own party, and hopeful that Buena Vista and the capture of Vera Cruz had affected Mexico, Polk favored the idea of a commission. Benton, however, would not have Slidell on the board; the President could not well ignore Slidell unless a higher official--the secretary of state himself--should be made sole representative; and no first-class man could go to Mexico and dance attendance on the whims, delays and insults of a government that scornfully held off. Indeed, the nation could not afford to place the head of our state department or a commission of leading public figures in such a predicament.[27.8] [TRIST APPOINTED PEACE COMMISSIONER] At length, however, Buchanan's resourceful mind thought of sending Nicholas P. Trist, a protégé of his own and now chief clerk of the state department. Trist's dignity, it was doubtless thought, would not be too delicate; his action, it seemed evident, could be controlled; and the glory of success, if a treaty should be made, would belong to the administration--particularly the secretary of state--and not exalt the agent in any dangerous political sense. Besides, the chief clerk was a man of agreeable and impressive appearance, admitted talents, unusual industry and the highest character; he had studied at West Point; he knew diplomatic business; as consul at Havana for a term of years, he had become acquainted with Spanish-American traits; and he spoke the language of Mexico fluently. He was therefore immediately appointed as Polk's agent--though officially styled "Commissioner Plenipotentiary"--to be paid, not as a diplomatic representative, but from the appropriation for the contingent expenses of foreign intercourse.[27.8] The appointment was not, however, entirely felicitous. Trist, associated with Jefferson as law-student and as grandson by marriage and associated with Jackson as private secretary, had sojourned on Olympus and tasted the ambrosia of the gods; but he did not possess their divine constitution, and ambrosia disagreed with him. It gave him queer feelings in the head that were not exactly growing pains, and produced a state of mind that was neither of heaven nor of earth. The Declaration of Independence was always resounding in his thoughts, and mentally he was always walking up the stairs of the White House arm in arm with a hero, sage and prophet; but he overlooked the foundation of downright common sense on which great men build, and lacked the humor that might at least have kept him near the ground.[27.8]