The news has recently reported the tragic death in Afganistan of a young doctor whilst travelling back from treating patients in outlying regions.
Her name was Dr Karen Woo, and she had a blog, which I've just read.
She died along with nine other people in what was either a robbery or a vague politico-religious assault, but was definitely an unjustified and deeply stupid attack showing an utter lack of respect for life by the perpetrators.
I have no supernatural faith, no religion, no belief in an afterlife, and I've never seen or read any evidence that humans have a soul or a spirit or any purpose other than that which we have created for ourselves, or that we are anything more or less than beautifully evolved biological mechanisms.
What we do have is a life.
Whatever happens, and for however long that life is, what can never be taken away is the simple fact that we existed, and will always have existed.
Taking life is far easier than preventing someone dying, and Dr Woo lived on the far side of the moral spectrum from her murderers.
Sometimes, I'm not lighthearted.