I think his point was that success and passion aren't necessarily correlated, so while passion might be a prerequisite for success (but maybe not), having passi

I think his point was that success and passion aren't necessarily correlated, so while passion might be a prerequisite for success (but maybe not), having passion isn't a very good indicator that any one person will be successful. It's much more likely that a tried-and-true idea executed well will make money. That point is emphasized by the fact that his bank wouldn't loan money to passionate people, so I'd say if you want advice you can "take to the bank," this is a good example of that. Of course, if you define success as something other than "make a lot of money," then this is probably the wrong article to be reading.