They are those wingd postilions that can fly From the Antarctic to the Arctic sky; The heralds and swift harbingers that move From east to west on embassies of love. Howell.On Letters, Poem II. Line 5.
Kind messages that pass from land to land, Kind letters that betray the hearts deep history, In which we feel the pressure of a hand, One touch of fire and all the rest is mystery! Longfellow.The Sea-side, and Fire-side: Dedication.