Authors:

Suddenly she realized that what she was regretting was not the lost past but the lost future, not what had not been but what would never be.

F. Scott Fitzgerald (2015). “The Complete Works of F. Scott Fitzgerald: Novels, Short Stories, Poetry, Articles, Letters, Plays & Screenplays: From the author of The Great Gatsby, The Side of Paradise, Tender Is the Night, The Beautiful and Damned, The Love of the Last Tycoon, The Curious Case of Benjamin Button and many other notable works”, p.1469, e-artnow
Suddenly she realized that what she was regretting was not the lost past but the lost future, not what had not been but what would never be.