Last night I dreamt of a Tarot reading, the cards spread horizontally. I stopped when I came to the card 'Light'. Suddenly I didn't know what it meant: a picture of a lantern, high in the sky, casting its dim rays down over everything. I grew more and more agitated. What does this card mean? How could I just forget it? I became so flustered I had to abandon the reading. How could I go on whilst I felt so infuriatingly uncertain? It was only after I woke up I realised that there is no such Tarot card as 'Light'.