“Although bitcoin could go up to $20,000, it can go to $30,000. It’s on its way to zero — somewhere between zero and 200. It’s a utility token for criminals, terrorists, money launderers, tax evaders — they’ll always find some use for it. So it might not go all the way to zero. It’s clearly a bubble — it looks like the second biggest bubble in history after tulip mania.”

Jim Rickards, December 2017