The passionate individual is more likely to engender a sense of trust from the people that they come into contact. Most people buy from other people, not companies. Passion leads to persistence, the salesman's advantage. The more passionate the individual, the more sales calls, more objections overcome, more rejections absorbed and more creative solutions to customer problems. The passionate sales person believes that they have the advantage and that success is only a matter of time and knowledge.
Persistence leads to prosperity.
They're true, but more so for the passionate individual. And, prosperity doesn't just mean monetary reward either. Prosperity can also mean having the ability and pleasure to help other people achieve their career and personal objectives. Companies aren't passionate, people are. That's why I look for people who are passionate.