Edward R Murrow once said, “To be persuasive we must be believable; to be believable we must be credible; to be credible we must be truthful.” Influence is the central competence, the ultimate ability of a person to alter or persuade the thoughts, beliefs and actions of an individual or a group. To be influential is one of the greater assets of an authoritative person. Authority and influence almost goes hand in hand. People in authority can easily influence others and bring the much desired change in a person, group or society, in large. Browse through these famous formations quotations and sayings for a better insight into it.