“From James Madison to Thomas Jefferson, 18 July 1787,” Founders Online, National Archives, https://teachingamericanhistory.org/uxkk.

... The Convention continue to sit, and have been closely employed since the Commencemt. of the Session. I am still under the mortification of being restrained from disclosing any part of their proceedings. As soon as I am at liberty I will endeavor to make amends for my silence, and if I ever have the pleasure of seeing you shall be able to give you pretty full gratification. I have taken lengthy notes of every thing that has yet passed, and mean to go on with the drudgery, if no indisposition obliges me to discontinue it. It is not possible to form any judgment of the future duration of the Session. I am led by sundry circumstances to guess that the residue of the work will not be very quickly despatched. The public mind is very impatient for ye event, and various reports are circulating which tend to inflame Curosity. I do not learn however that any discontent is expressed at the concealment; and have little doubt that the people will be as ready to receive as we shall be able to propose, a Government that will secure their liberties & happiness....