"Things without all remedy should be without regard: what’s done, is done."

"Naught's had, all's spent, / Where our desire is got without content. / 'Tis safer to be that which we destroy / Than by destruction dwell in doubtful joy."

"How now, my lord! Why do you keep alone, / Of sorriest fancies your companions making, / Using those thoughts which should indeed have died / With them they think on?"

— Lady Macbeth, Act III, Scene II