The mind can't project itself as a subject and an object, right? So what seemed to be external, when you wake up, you realize it was all internal. It's me, myself isay. I alone appeared as another. They are all one reality. All this diversity is one reality. Vevecanda puts it this way, one alone exists. It appears as nature soul. Nature's soul means object nature means the objective universe. Soul means the subject as you, the individual and the world that you experience.