1From Thomas Jefferson to Antoine Louis Claude Destutt de Tracy, 5 November 1823 (Jefferson Papers)
I cannot but have appeared remiss in my acknolmts of the several lres with which you have favored me, but the obstructions have been insuperable much sickness the accident of a broken arm, weakness of body and octogenary intertitude. no letters are more welcome to me than yours, and none should I answer more cordially were my powers now equal to it. you have labored for us too much and too...