On Valentine’s day morning a woman wakes up with a start and says to her husband, “Honey, I had the strangest dream.  I dreamt that you gave me a pearl necklace.  What do you think it means?”  He replied with a smile, “You’ll find out tonight!”
That evening at dinner, the husband hands her a gift wrapped box.  Excited, his wife removes the ribbon and tears off the paper.  Inside, she finds a book “The Interpretation of Dreams.”