not famous for their physical strength

From Kurt Vonnegut, via USA Today, Bookslut, and bookshelves of doom:

Music (especially the blues) cheers him, as do people who behave decently. Librarians, too — "not famous for their physical strength" — who resist having books removed from shelves and refuse to give names of people who have checked out certain books in the era of the Patriot Act.

"The America I loved," he writes, "still exists in the front desks of public libraries."

I don't think I have anything to add to that.