I rarely recognize quotes unless they are insanely famous. And in any case, the author should allude to the original author in some fashion. "Orlando" isn't one of Woolf's more widely read works in the US - "Room of One's Own," "Mrs. Dalloway," and "To the Lighthouse" are more familiar, and to a much smaller audience. In fairness, Shakespeare is recognized (and oft misquoted) by many in the US.