The picture [Friedrich's painting: 'The Cross on the Baltic Sea' ] for your friend has already been sketched out, but there is no church in it, not a single tree or plant, not a blade of grass. On a bare and rocky seashore there stands, high up, the cross - for those who see it that way, a consolation, and for those who don't see it that way, just a cross.
— CASPAR DAVID FRIEDRICH