What is the Nathan Rothschild maxim?

The Nathan Rothschild maxim says that you ‘make money in the stock market when blood flows in the streets’. This actually happened after 26/11 in Mumbai, when people returned to the stock market on November 28 after the terrorist attacks. Nathan Rothschild was a stock dealer in the London stock market who took advantage of early knowledge of England’s victory at Waterloo. First, he sold all his shares, which caused heavy meltdown in the market. Towards the end, he bought all the shares at a very low price before the news of England’s victory reached London. With England’s victory, the share market rose rapidly and in the process, Nathan made a lot of money.