References in classic literature ?
Elinor wished very much to ask whether Willoughby were then in town, but she was afraid of giving him pain by any enquiry after his rival; and at length, by way of saying something, she asked if he had been in London ever since she had seen him last.
The answer which is given by Plato is paradoxical enough, and seems rather intended to stimulate than to satisfy enquiry.
I told them, what I-- really thought, that the enquiry would be of a serious nature, and would require very good eyes.