There are millions of chords. There are millions of numbers. And everyone forgets the one that is a zero. But without the zero, numbers are just arithmetic. Without the empty chord, music is just noise.
Terry PratchettBut, in truth, it had not exactly been gold, or even the promise of gold, but more like the fantasy of gold, the fairy dream that the gold is there, at the end of the rainbow, and will continue to be there forever - provided, naturally, that you don't go and look. This is known as finance.
Terry Pratchett