Letter to Benjamin Rush September 16th, 1810:
“I deceived you a little by an Inference of my own from what The Edinborough Reviewers had written. I know not that they have mentioned you by Name or your Works by their Titles: but I read in them “If every Thing which has ever been written in America (if you except perhaps the Works of Franklin) were annihilated the Sum total of human Knowledge would in no degree be lessened.” I draw the Inference, for Dr Rush’s Works have been written and printed in America. I have felt as well as you The Odium Theologicum; the Odium Politicum, and The Odium Mercatorium. Happily I have escaped as far as I know The Odium Philologium, The Odium Medicum and The Odium Sanguiphobium. I have escaped these Hatreds because I never knew enough about any of them to excite any other Mans Jealousy or Envy.
But now I must tell you a great and grave Truth. I am one among your most Serious haters of the Philological Species. I do most cordially hate you for writing against Latin Greek and Hebrew. I never will forgive you untill you repent, retract and reform. No Never! It is impossible.”