“Bereavement is a darkness impenetrable to the imagination of the unbereaved”
“What reason for vanity in being plunged into impenetrable darkness?”
“Let your plans be dark and impenetrable as night, and when you move, fall like a thunderbolt.”
“Though it may be more romantic to picture the bereaved as gaunt, I imagine you can grieve as efficiently with chocolates as with tap water.”
“Her countenance was all expression; her eyes were not dark but impenetrably deep; you seemed to discover space after space in their intellectual glance.”
“If we trace the history of any nation backwards into the past, we come at last to a period of myths and traditions which eventually fade away into impenetrable darkness.”