In 1789, the Assembly of Pennsylvania calling a convention to revise the Constitution of the State, Mr. Gallatin was sent as a delegate from Fayette County. To the purposes of this convention he was opposed, as a dangerous precedent. He had endeavored to organize an opposition to it in the western counties, by correspondence with his political friends. His objections were the dangers of alterations in government, and the absurdity of the idea that the Constitution ever contemplated a change by the will of a mere majority. Such a doctrine, once admitted, would enable not only the legislature, but a majority of the more popular house, were two established, to make another appeal to the people on the first occasion, and, instead of establishing on solid foundations a new government, would open the door to perpetual change, and destroy that stability which is essential to the welfare of a nation; since no constitution acquires the permanent affection of the people, save in proportion to its duration and age. Finally, such changes would sooner or later conclude in an appeal to arms,--the true meaning of the popular and dangerous words, "an appeal to the people." The opposition was begun too late, however, to admit of combined effort, and was not persisted in; and Mr. Gallatin himself, with practical good sense, consented to serve as a delegate. Throughout his political course the pride of mastery never controlled his actions. When debarred from leadership he did not sulk in his tent, but threw his weight in the direction of his principles. The convention met at Philadelphia on November 24, 1789, and closed its labors on September 2, 1790. This was Gallatin's apprenticeship in the public service. Among his papers are a number of memoranda, some of them indicating much elaboration of speeches made, or intended to be made, in this body. One is an argument in favor of enlarging the representation in the House; another is against a plan of choosing senators by electors; another concerns the liberty of the press. There is, further, a memorandum of his motion in regard to the right of suffrage, by virtue of which "every freeman who has attained the age of twenty-one years, and been a resident and inhabitant during one year next before the day of election, every naturalized freeholder, every naturalized citizen who had been assessed for state or county taxes for two years before election day, or who had resided ten years successively in the State, should be entitled to the suffrage, paupers and vagabonds only being excluded." Certainly, in his conservative limitations upon suffrage, he did not consult his own interest as a large landholder inviting settlement, nor pander to the natural desires of his constituency.