A man of 45 does not want to open new accounts of friendship. He has said Kitty kitty long enough.
(Ralph Waldo Emerson JMN, XI, 262)

(I haven't seen this myself in Harvard University Press Journals and Miscellaneous Notebooks vol XI, but scored the quote from an article by Philip Lopate in Harper's and the chapter-and-verse from the Introduction to Anita Patterson's From Emerson to King : Democracy, Race, and the Politics of Protest, thanks to Google. This makes a fine object lesson in the ins and outs of finding stuff, and of course suggests that one ought to read more of Emerson...)