"There is no outward sign of true courtesy that does not rest on a deep moral foundation."

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I encourage courtesy. To accept nothing less than courtesy, and to give nothing less than courtesy. If we accept being talked to any kind of a way, then we are telling ourselves we are not quite worth the best. And if we have the effrontery to talk to anybody with less than courtesy, we tell ourselves and the world we are not very intelligent.

— Maya Angelou