O God! O God! that it were possible
To undo things done; to call back yesterday
That Time could turn up his swift sandy glass,
To untell the days, and to redeem these hours.

— Thomas Heywood (1574?-1641), A Woman Killed with Kindness (Act 4, Sc. 6)

Photograph courtesy of Wally Goetz under CC BY 2.0 license.