I told the grand jury something else about my conversation with Rove. Although it's not reflected in my notes or subsequent e-mails, I have a distinct memory of Rove ending the call by saying, "I've already said too much." This could have meant he was worried about being indiscreet, or it could have meant he was late for a meeting or something else. I don't know, but that sign-off has been in my memory for two years.

http://www.truthout.org/docs_2005/071705X.shtml