The letter is lettered in excellent brush calligraphy on fine parchment, and rolled into a scroll.
Miscreant Pilgrims of the Flying Temple!
Stop stealing our letters! We, the Pilgrims of the Floating Monastery, are the only proper recipients of letters from the worlds of the great floating sea of Poseidonus. We are the pilgrims with the mystical power of passing through water (calling it mere swimming does not do it justice), and it is our and only our responsibility to answer any calls for help that may originate here. But time and time again, when one of the residents of the worlds within or on the floating sea write a letter, the letter makes its way not to our monastery but to your temple. And, as a result, the people are confused about who their proper helpers are. This is simply wrong, and the people must be shown the error of their ways.
The situation is not beyond correction -- if a group of your pilgrims could come here to our monastery, we could gather the leaders and opinion makers of our worlds and bring them here, and you could simply explain to them that we, and not you, are their proper guardians.
If you are not willing to undertake this simple and fair step, I will have no choice but to challenge you to a contest of powers, judgment and wisdom. And we will not lose!
Heh! Jonathan Walton would like this letter. He prefers the ones that problematize the temple's benign monarchy over the rest of the universe. Ironically, I was going to write a letter about someone intercepting the temple's letters, but positioning the temple itself as the interceptor is just great. :)