"Only those live who do good."

 Count Leo Tolstoy

I don't agree with the statement because it is vague and misleading. What does it mean? Does it mean something like, those who do good have a life or those who do good are guaranteed a spot in the afterlife. If I understood what the statement meant I would probably agree, but at the moment I don't understand what it means. Does it mean that those who do good are the one's who are living life or does it mean something else entirely. I don't understand the statement it is very misleading.