What makes a leader? That's the question star headhunter Thomas J. Neff and James M.Citrin try to answer in their recent book, 'Lessons from the Top: The Search for America's Best Business Leaders'. The six principles shared by top business leaders and discussed in the book are: Living with integrity, developing a winning strategy or 'big idea', building a great management team, inspiring employees to greatness, creating a flexible and responsible organization and using reinforcing management systems. Citrin and Neff elaborated on the six principles in a recent Business Week interview. The most important one for business leaders is passion about what they are doing. 'The leaders we interviewed for the book loved to talk about their jobs.' 'Also, the high-level jobs today are so enormously demanding that successful executives must have a high energy level. They work an average of 65 hours per week. When the passion and drive ebb, that's when you know it's time for that person to move on,' said Neff. Top leaders are clear thinkers. They are focused, know where they are heading, and are able to communicate with a wide audience. Today's successful leaders know more about the team approach than did their predecessors. 'It wasn't too many fears ago that the dictatorial approach, the command-and-control management style, was accepted. Today, it's more about Working through people, being more of a leader and empowering other executives on the team to carry out the mission,' said Neff. Citrin and Neff are not pretending to be sociologists, but it is clear that the dynamics of the labor market have given more power to talented employees. People in an organization often have the exact same information at about the same time as a person at the top. So no more can one take for granted that information is power. People often say it is difficult to create a good balance between work and family. Some feel you can be successful in work or with your family, but not both. But the reality seems to be that a strong family life and success on the home front actually contribute to professional success. Many of the CEOs interviewed by Citrin talk about the role their spouses play in their success. Of the 50 interviewed in the work, 42 are still married to their original spouse—a sharp contrast with the national divorce rate in the United States. Which best describes the meaning of 'headhunter' in line t, Para 1?