“When you linger in tormented darkness, remember, the dawning always arrives on time.”
1981
Related quotes

“Faith is the bird that feels the light and sings when the dawn is still dark.”

“So you must always remember / that time ends the beauty”
Original: Ainsi vous doit-il souvenir / Que le temps finit la beauté
Source: Oeuvres poétiques

Borrowing From the French http://www.humanitiesweb.org/human.php?s=l&p=c&a=p&ID=20649&c=323
1860s, May-Day and Other Pieces (1867)