Line: The book shelf in the room shows the use of line because the book shelf shelves are built against the wall forming a miniature tree. Our eyes are drawn to look at the book shelf tree from bottom to top and outward to the tree/bookshelf branches.
"Do not pity the dead, Harry, pity those who live without love. This is a fate worse than death. Living without love is worse than living without your soul. You are fully sane and love evades you." -Albus Dumbledore tells Harry in the afterlife, HPatDH