In the latest episode of Doctor Who, the Doctor was faced with a breakdown in the ceasefire between humans and the extremist faction of an alien race that has been living secretly on Earth. He then came out with a speech that sums up all wars.
Mitchell - Being Human... He was in the wrong era it seemed, his clothes strikingly different against the designer chair he was sitting in. He kept fidgeting, pulling at the fingerless gloves on his hands or picking at specks of flint on his jeans. His eyes held something in them, a secret or a past life that would never be, something that haunted him. I could have watched him forever.