But though the imagination cannot supply the place of real memory, it has the wild faculty of counterfeiting memory. It dreams of persons it never knew, and talks to them as if it remembered them as old acquaintance. It relates circumstances that never happened, and tells them as if they had happened. It goes to places that never existed, and knows where all the streets and houses are, as if we had been there before. The scenes it creates are often as scenes remembered. It will sometimes act a dream within a dream, and, in the delusion of dreaming, tell a dream it never dreamed, and tell it as if it was from memory. It may also be remarked, that the imagination in a dream has no idea of time, as tune. It counts only by circumstances; and if a succession of circumstances pass in a dream that would require a great length of time to accomplish them, it will appear to the dreamer that a length of time equal thereto has passed also.