Oh yes... and I believe that it goes both ways and governs both negative and positive real thoughts, one can get embarrassed by too much admiration at times.

Politeness is considered and chosen carefully; Courtesy is innate and performed without thinking.

(I don't remember who told me that, only that it was part of a lecture and ended with the instructions to practice politeness often, so that it could sink in. It was quite a few years before I understood what was meant by "sink in." I'll leave the interim to your imagination.)

meldy, that makes sense to me. I'm fairly well endowed with courtesy both innate and learned at the knee of my parents, but I have to say this quote applies to me a lot these days:)