The phrase "to hire an authority" means to engage or bring in a person who is recognized as an expert, leader or specialist in their field. This could refer to someone who has achieved success and recognition within their industry through years of experience, education, skills, and knowledge. When you "hire an authority," it implies that the individual possesses unique insights, perspectives, and abilities that can benefit your organization or project. In other words, by hiring an expert in a particular field, you are investing in their knowledge to help guide decisions, solve problems, and achieve success within that area of expertise.