"Through dancing many maidens have been unmaidened, whereby I may say it is the storehouse and nursery of bastardy." ~John Northbrooke
Isn't that just lovely? :-)
I also like: "Dancing is wonderful training for girls, it's the first way you learn to guess what a man is going to do before he does it." ~Christopher Morley, Kitty Foyle
Oh, and this is the Yeats quote...
"O body swayed to music, O brightening glance,
How can we know the dancer from the dance?"