There that god (the mind) enjoys in sleep greatness. What has been seen, he sees again; what has been heard, he hears again; what has been enjoyed in different countries and quarters, he enjoys again; what has been seen and not seen, heard and not heard, enjoyed and not enjoyed, he sees it all; he, being all, sees.

In plain words: In dreams the mind plays freely. It sees again what it saw and hears again what it heard, even things from faraway places. It also sees things it never really saw or heard, because in dreams the mind makes up the whole world itself.