First published by Money Metals here: https://www.moneymetals.com/news/2019/08/06/protect-wealth-from-negative-interest-rate-001833

The world is in the midst of one of the strangest asset bubbles of all time. Instead of being fueled by the hope of bigger and bigger gains, it is being driven by a resignation to incurring lower and lower… and ultimately negative, yields on capital.