They were together members of the Convention that framed the Constitution, and of the State Convention in Connecticut that adopted it.

Chief Justice Ellsworth told John Adams that he had made Mr.Sherman his model in his youth.

Mr.
Adams adds: "Indeed I never knew two men more alike, except that the Chief Justice had the advantage of a liberal education, and somewhat more extensive reading.

Mr.Sherman was born in the State of Massachusetts, and was one of the strongest and soundest pillars of the Revolution." It would be hard to find another case of life-long and intimate companionship between two public men where such a declaration by either of the other would not seem ludicrous.
He was the only person who signed all four of the great State Papers, to which the signatures of the delegates of the different Colonies were attached: The Association of 1774; The Articles of Confederation; The Declaration of Independence, and The Constitution of the United States.
Robert Morris signed three of them.
His tenacity, the independence of his judgment, and his influence over the great men with whom he was associated, is shown by four striking instances among many others where he succeeded in impressing his opinion on his associates.
_First:_ It is well known that the dispute between the large States, who desired to have their votes in the National Legislature counted in proportion to numbers, and the small States, who desired to vote by States as equals, a dispute which nearly wrecked the attempt to frame a Constitution of the United States, arose in the Continental Congress, and gave rise to great controversy there when the Articles of Confederation were framed.

Mr.Sherman was one of the Committee that framed those Articles, as he was afterward one of the Committee who reported the Declaration of Independence.
John Adams writes in his diary, that Mr.Sherman, in Committee of the Whole, moved August 1, 1776, that the vote be taken both ways, once according to numbers, and a second time, when the States should vote as equals.
This was, in substance, so far as the arrangement of political power was concerned, the plan of the Constitution.