-Warren Buffet
I don't know how I feel about that quotation.
Warren Buffett didn't invent that concept or mentality. Its a fundamental observation many investors, traders and businessman have repeated over the centuries. Some of the best investment opportunities were to be found during the crisis of 2008 when bank stocks were severely underpriced--before the bailout bill was announced. Bitcoin would have been a good investment around 2014 when silk road was closed and china cracked down on exchanges. The idea that opportunities abound under circumstances where people are fearful like the 2008 crisis or bitcoin's 2014-esque crash is a common theme throughout history.
AFAIK Buffett made his fortune utilizing long term HODL investment strategies based on market and business fundamentals. He wasn't someone to make spur of the moment deals or profit from times when the market was at its lowest and future prospects were bleak.
What happens when people are both greedy and fearful? That's a question which interests me. It could be something to be answer in order to accurately anticipate which direction markets and economies are headed.