But what about the past?

You can learn many things from the past about how to conduct yourself, but there is nothing to learn from the past about how to be, because you are a complete life by yourself, you don't have to learn how to be a life from the past. Maybe you have to learn how to be a good engineer maybe you have to learn how to be something else in the society from the past but you don't have to learn how to be a life from the past because past has nothing to do with this. This is a fresh life and this is a complete life.