Can anyone write me a poem about libraries?

I own a small library in my town, and I would like to hang a small plaque on the front doors with a poem about libraries written on it. I would like it to be two or three stanzas. Even a line you could write for me would be greatly appreciated; I have the worst case of writers' block at the moment! :) I would like the poem to be about what libraries, librarians, and books mean to you, and anything that fits in those categories would be wonderful. Many thanks in advance!