Far better to be an uncharismatic leader who gets the right people to confront the brutal facts than to be a magnetic force of personality who leads compliant followers to disaster. If you have charisma, you can still build an enduring great company. But never forget: If your company cannot be great without your personal charisma to inspire, then it is not yet a great company.

As this book will show, traits like overconfidence and self-absorption should be seen as red flags. But instead, they prompt us to say, ‘Ah, there’s a charismatic fellow! He’s probably leadership material.’ The result in both business and politics is a surplus of incompetent men in charge, and this surplus reduces opportunities for competent people—women and men—while keeping the standards of leadership depressingly low.

There is a world of difference between the personality traits and behaviors it takes to be chosen as a leader and the traits and skills you need to be able to lead effectively.

Narcissism and psychopathy are so fascinating because they can simultaneously help individual leaders advance their careers while hurting the people and organizations they lead.

To be clear, many charismatic people are neither psychopathic nor narcissistic, in the same way that many psychopathic and narcissistic people have absolutely no charisma. But when these darkside traits are lubricated with charisma, they can make leaders pretty lethal. The more we rely on charisma as a marker of leadership potential, the more we risk ending up with toxic leaders who are exploiting their charms and influence to grab power and manipulate their followers.