that you have erred in anything, then that you shall amend by adding or diminishing; for the constancy of Reiteration doth often increase your authority and power and striketh terror into the Spirits, and humbleth them to obey.
And therefore some use to make a Gate in the Circle whereby they may go in and out, which they open and shut as they please, and fortifie it with holy Names and Pentacles.
This also we are to take notice of, That when no Spirits will appear, but the Master being wearied hath determined to cease and give over; let him nor therefore depart without licensing the Spirits: for they that do neglect this, are very greatly in danger, except they are fortified with some sublime defence.
Often times also the Spirits do come, although they appear not visible, (for to cause terror to him that calls them) either in the things which he useth or in the operation it self. But this kinde of licensing is not given simply, but by a kinde of dispensation with suspension, until in the following terms they shall render themselves obedient. Also without a Circle these Spirits may be called to appear, according to the way which is above delivered about the consecration of a book.
But when we do intend to execute any effect by evil Spirits, where an Apparition is not needful; then that is to be done, by making and forming that thing which is to be unto us as an instrument, or subject of the experiment it self; as, whether it be an image, or a Ring, or a Writing, or any Character, Candle, or Sacrifice, or any thing of the like sort: then the name of the Spirit is to be written therein, with his Character according to the exigency of the experiment, either by writing is with some blood, or otherwise using a perfume agreeable to the Spirit. Oftentimes also making Prayers and Orations to God and the good Angels before we invocate the evil Spirit, conjuring him by the divine power.
Chapter xv.
There is another kinde of Spirits, which we have spoken of in our third book of Occult Philosophy, not so hurtful, and neerest unto men; so also, that they are effected with humane passions
