"The closer a man approaches tragedy the more intense is his concentration of emotion upon the fixed point of his commitment, which is to say the closer he approaches what in life we call fanaticism"

This quote by Arthur Miller talks to the idea that when an individual is faced with tragedy, their emotions end up being more focused and extreme. This extreme concentration of emotion is directed towards the fixed point of their dedication, which is typically seen as a kind of fanaticism. Miller is suggesting that when a person is confronted with disaster, they end up being more devoted and passionate about their beliefs and worths. This can be seen as a kind of fanaticism, as the person is so devoted to their beliefs that they want to go to extreme lengths to secure them. Miller's quote is a tip that disaster can highlight the very best and worst in people, which it is very important to be knowledgeable about the potential for fanaticism when faced with disaster.