And, this 'mind' enjoys in the dream the glories of its imagination. He sees again what he had seen and hears again what he had heard; In fact, whatever he had personally experienced, thought and known in different places and different areas, he re-lives all that in his dream state. What it had seen and what it had not seen, what it had heard and what it had not heard, what it had known and what it had not known, all that is and all that is not, all, it sees all, cause 'Mind' is the 'world'.