The previous post mentions an Amos Oz 
novel, A Tale of Love and Darkness 
(Sipour Al Ahava Vehoshekh,  סיפור על אהבה וחושך),
apparently first published in Hebrew in 2002.

Related material —

“By groping toward the light we are made to realize
how deep the darkness is around us.”

— Arthur Koestler, The Call Girls: A Tragi-Comedy ,
Random House, 1973, page 118