My dear friend, what is this our life? A boat that swims in the sea, and all one knows for certain about it is that one day it will capsize. Here we are, two good old boats that have been faithful neighbors, and above all your hand has done its best to keep me from ‘capsizing’! Let us then continue our voyage—each for the other's sake, for a long time yet, a long time! We should miss each other so much! Tolerably calm seas and good winds and above all sun—what I wish for myself, I wish for you, too, and am sorry that my gratitude can find expression only in such a wish and has no influence at all on wind or weather.
Friedrich Nietzsche. Letter to Franz Overbeck, Genoa, 14 November 1881