“The papers all, my child, agree,

’Tis brimful of facetiæ.

“And everybody says the piece

With brilliant wit is filled;”

“And what is wit, my dear Papa?”

Quoth innocent Clotilde.

“Why, that I cannot say,” quoth he,

“But wit is not—vulgarity.”

From George Cruikshank’s Comic Almanack
for 1847.