The Aeneid, Book 1, Line 203

…forsan et haec olim meminisse iuvabit.

 — Virgil (19 BCE)

 An hour will come, with pleasure to relate
Your sorrows past, as benefits of Fate.

— Trans. John Dryden (1697) 

  It well may be
some happier hour will find this memory fair.

— Trans. Theodore C. Williams (1910)

Perhaps one day you will remember even
these our adversities with pleasure.

— Trans. Allen Mandelbaum (1971)

Some day, perhaps, remembering even this
Will be a pleasure.

— Trans. Robert Fitzgerald (1983) 

A joy it will be one day, perhaps, to remember even this. 

— Trans. Robert Fagels (2006)

Maybe the day’ll come when even this will be joy to remember.

— Trans. Frederick Ahl (2007) 

…perhaps one day you’ll even delight in remembering this.

— Trans. A. S. Kline (2016)