The attributes of a great lady may still be found in the rule of the four S's: Sincerity Simplicity Sympathy and Serenity.

"The letter we all love to receive is one that carries so much of the writer’s personality that she seems to be sitting beside us, looking at us directly and talking just as she really would, could she have come on a magic carpet, instead of sending her proxy in ink-made characters on mere paper."

Emily Post