Dressed themselves with air like the Muses, claims Agrippa, there are 30000 of Jupiter immortal spirits living on the Earth, which affect and guard mortal men, going everywhere on the Earth. It is given to every man a good spirit and equally an evil genius, whereof each seeks a union with the human spirit. But good and evil spirits choose manifest or not their powers according to the deserving level of each man.^[172]

“Fairy Vivien and the sorcerer Merlin, son of an ethereal being according to Agrippa”. Illustration by Gustave Doré, 1868.

From souls of men sometimes are created spirits. They may be blessed familiar spirits, which the Greeks call Eudaemons or else beings fashioned from ill deserving men, which are evil hags or hobgoblins that the Greeks call Cacodemons. Also they may be named as ghosts and can have an animal shape. Besides ethereal beings when having an affair with humans beget human children. Merlin the magician and Plato would be born from this circumstance.

A certain kind of spirits, continues Agrippa, is closer to men, they are affected with human passions and many willingly dwell with them. Some of them are uncritically fond of women, children, domestic and wild animals. Some beings are subject to man's commands. Celestial, evil beings or nature spirits are necessaries for the man and can be called for helping with enlightenment and mystic works as allies or without bond. However bad entities must bind good ones and some these only do what brings advantages to them. They fear the edge of the sword. For expelling disobedient evil spirits one good way would be intonating the sacred passage written in biblical passage of Psalms 92:9. The best assistants are those who had some human life like the saints and Greek heroes.

The fairies and hobgoblins abide fields; naiads do fountains; potamides rivers; nymphs marshes and ponds; oreades mountains; humedes meadows; dryads and hamadryads woods, which also satyrs and sylvani inhabit; the naptaes and agaptaes in flowers; the dodonaes in acorns; the paleaes and feniliaes in hay and the country. The man therefore may go in these places and allure them with sweet smokes, pleasant sounds, and by such instruments made of peculiar wood, adding songs, verses and enchantments. Must to be observed in this process the innocence of the mind and constant silence to avoid them can have fear running away. Otherwise the calling can attract hobgoblins, familiars and ghosts who will strike the person.^[173]