The beauty of nature and man's loneliness are dominant themes in the work of Caspar David Friedrich. The artist often places a small human figure in a broad landscape, as in his famous paintings Monk by the Sea and The Wanderer above the Sea of Fog. For a long time the importance and influence of this great Romantic painter were underestimated. When he died, Friedrich had already been forgotten by his contemporaries and was only rediscovered in the...