During my second month of college, or professor gave us a pop quiz. I was a conscientious student and had breezed through the questions until I read the Last one: "What is the first name of the women who cleans the school?"
Surely this was some kind of a joke. I had seen the cleaning women several times. She was tall, dark-haired and in her 50's, but how would I know her name?
I handed in the paper, leaving the last question blank. Just before class ended, one student asked if the last question would count our quiz grade.
"Absolutely," said the professor. "In your careers, you will meet many people. All are significant. They deserve your attention and care, even if all you do is smile and say "hello"
I've never forgotten that lesson. I also learned her name was Dorothy.