His Stoic ideas often involve avoiding indulgence in sensory affections, a skill which will free a man from the pains and pleasures of the material world. He claims that the only way a man can be harmed by others is to allow his reaction to overpower him. An order or "logos" permeates existence. Rationality and clear-mindedness allow one to live in harmony with the "logos". This allows one to rise above faulty perceptions of "good" and "bad"—things out of your control like fame and health are (unlike things in your control) irrelevant and neither good nor bad.