It also puts you in more of 'magick' sense of mind i.e. for me at least it raises my conciousness to a level which will make more of an impact, but yes protection is also the main factor, the circle is meant to represent the magicians aura.
Re: Question for all. By: WhiteRav3n / Knowledgeable Aug 26, 2012
Post # 5
Sacred space. It is a way to create a space that embodies the energy of all that is--the four directions, spirit within, above (heavens), below (underworld)--and essentially a space balanced between them all for us to practise. We tend to get caught up in one direction or another and a circle can bring us "centered" again into the correct balance.
Re: Question for all. By: Tiredofgaggs / Novice Aug 26, 2012
Post # 9
To create a space, clear and free of influences to work magic in. It also protects the participants inside the circle from anything that may want to try to interfere with the work. It creates a sphere of light, a place it invoke the deity you are working with, and helps to focus your energies to the purpose. It can also be an act of worship.