What we learn from the dying

My first day of medical school was a series of inspirational talks. The tone, set by the anesthesiologist who led off, was lighthearted. His subject was "Everything you will ever need to know about medicine." This turned out to be just three things, which he had us all recite: Air goes in and out. Blood goes round and round. Oxygen is good. Just keep these in mind, he said, and you'll be okay.
What we learn from the dying