"This is the work of a truly original thinker. The chapters on Association, Memory, and Imagination, may be repeatedly perused with new pleasure and increasing profit. The most bigoted dogmatist cannot be offended. Except a new theory of conception, I find no innovation upon Reid's theory." - Journal, 15-20 August 1804.

...you were so kind as to recall me to your recollection on the public'n of your invaluable book on the Philosophy of the human mind a copy of which you sent me, and I have been happy to see it become the text book of most of our colleges & academies, adn pass thro' several reimpressions in the US ... (TJ to Stewart, 26 April 1824)

I consider him [Stewart] and [Destutt de] Tracy as the ablest Metaphysicans living; by which I mean the Investigators of the thinking faculty of man. Stuart seems to have given it's natural history, from facts and observations; Tracy it's modes of action and deduction, which he calls Logic, and Ideology ... (TJ to John Adams, 14 March 1820)

http://lcweb2.loc.gov/cgi-bin/ampage?collId=rbc3&fileName=rbc0001_2007jeffca...