" There are plenty of attributes that separate the great leader from the good manager. Both may put their work before family and friends, survive on little sleep, endure a lifetime of red-eye flights. Look more closely and you will find that the great leader possesses an unusual, and essential, characteristic – he will think and operate like an owner, or a person who owns a substantial stake of the business, even if, in a financial or legal sense, he is neither. "

― Alex Ferguson , Leading: Learning from Life and My Years at Manchester United