Manic entrepreneurs
The NY Times has an article about entrepreneurial personalities:
The attributes that make great entrepreneurs, the experts say, are common in certain manias, though in milder forms and harnessed in ways that are hugely productive. Instead of recklessness, the entrepreneur loves risk. Instead of delusions, the entrepreneur imagines a product that sounds so compelling that it inspires people to bet their careers, or a lot of money, on something that doesn’t exist and may never sell.
But contrast this with Gladwell’s New Yorker article earlier this year, who say that successful entrepreneurs aren’t really risk-takers.