One of the most evocative works of art on display in London ever has been Paul Cummins' 888,246 ceramic poppies covering the moat of the Tower of London and spilling from one of its turrets. I don't think it's an exaggeration to call it a phenomenon. Thousands of people journeyed to to this part of the City to witness the installation for themselves, including me. And I would defy anyone seeing it in person not to think about the horror of war and the sacrifices of very young men in generations past. And it reinforced my view that great art that contains great purpose has the power to move people deeply.