I was watching my Sunday night show Defying Gravity and I heard a line that was memorable. The show is set in the year 2052 (with flashbacks to five years earlier in the story's continuity), the series follows eight astronauts—four women and four men—from five countries on a six-year space mission through the Solar System, where everything they do is monitored. In this episode (105), the doctor of the ship had saved over 3500 patients' lives while serving in a war. He was asked who he remembered. To the shocked listener, he replied no one. He explained that he only remembered the lives he didn't save. Why? He only remembered the situations he learned from -- which were his mistakes, i.e. the patients who died.
Somehow that made sense. I prefer to think of my mistakes as my scars — the undeniable badges of some hopeful wisdom gained by some hopefully educational mistakes. It would seem that our humanity is a never-ending struggle against our very DNA for darkness. In the end, our scars determine the altitude possible.