"The curse will never end."  From Dark Shadows episode 1241.

"The curse of a witch reaches out into the night."  From Dark Shadows episode 484.

"The bad wishers."  From Tales From Silver Lands by Charles J. Finger and illustrated by Paul Honoré, 1924.

From Illinois College's 1986 yearbook.

"The curse, buried in days of fear, found in days of laughter."  From The Children's Newspaper, 1930.

"It doesn't matter if you say you have a curse and you might kill me."  From Canada's answer to Dark Shadows, Strange Paradise episode 114.

"The curse will never end."  From Dark Shadows episode 1244.

"Your grave will be a bottomless pit."  From Dark Shadows episode 601.

"The old spells were the good spells.  Some of the language is really quite beautiful.  'May Beelzebub's drool sear your eyelids shut.'  They don't write them like that anymore."  From Passions episode 219.

"Oh dear God, dear God please let the curse be over."  From Dark Shadows episode 1214.

"A blessing or a curse must be done properly!"  From The Improvement Era, 1967.

"You will be consumed by the eternal fires of hell."  From Dark Shadows episode 601.

Curses convey.  "We are all cursed.  And where we go we take it with us."  From Dark Shadows episode 1236.

From Curse of the Dream Witch by Allan Stratton.

Who believes in curses?  "Anyone who has to."  From Dark Shadows episide 446.

From Baptized with a Curse by Edith Stewart Drewry, 1870. 

It seems to be a fairly widespread malediction: "My curse will bring you tears, and then more tears."  From Dark Shadows episode 797.

Last we checked, softcovers of this were going for nearly a thousand dollars: Curses, Hexes, & Spells by Daniel Cohen.

From Curse of the Dream Witch by Allan Stratton.

This is us every time we go to sleep.  With the exception that we don't wear as much lipstick to bed.  From Unknown, 1940.