What makes one person stand out in such a way that others are moved by them? What defines such a leader? What sort of leader sustains others on a daily basis? At the core of the most powerful leaders is presence, or that indefinable yet palpable feeling that others experience around them. It is their interesting difference, the angularity of their approach, a continually positive and constructive sense of the world, or just a totally different slant they put on situations. However you describe it, leaders have it. You know when they walk in the room. When they talk, people listen.