Again, she asked them, whether their vehicles were living bodies? They are self-moving bodies, answered they, and therefore they must needs be living; for nothing can move itself, without it hath life. Then, said she, it must necessarily follow, that this living, self-moving body gives motion to the spirit, and not the spirit motion to the body, as its vehicle. You say very true, answered they, and we told you this before. Then the Empress asked them, of what forms of matter those vehicles were? They said they were of several different forms; some gross and dense, and others more pure, rare, and subtle. If you be not material, said the Empress, how can you be generators of all creatures? We are no more, answered they, the generators of material creatures, than they are the generators of us spirits. Then she asked, whether they did leave their vehicles? No, answered they; for we being incorporeal, cannot leave or quit them: but our vehicles do change into several forms and figures, according as occasion requires. Then the Empress desired the spirits to tell her, whether Man was a little world? They answered, that if a fly or worm was a little world, then Man was so too.