The Inverted Pentagram
The most notorious star in all of magick is the inverted pentagram. Does it not mean a devil’s head? Is it not evil?
Thanks to Eliphaz Levi, it does indeed symbolize a goat’s head to many magicians, but no, it is generally not considered an evil symbol by those who use it.
Levi associated the inverted pentagram with “evil,” and yet used the goat head’s inverted-pentagram symbolism in his famous drawing of Baphomet. (The inverted pentagram is implied by the shape of the goat’s head, contrasting with the upright pentagram on his forehead). This suggests he knew all too well the rebellious, blindly creative, Capricorn-type energy he described would be used by other magicians “in the know.”
Not all magicians use the inverted pentagram the same way, but there is a certain rebelliousness implied in it since most pentagrams are drawn point upward. Before Levi, the inverted pentagram was not considered an “evil” symbol whatsoever. The Pythagoreans, mentioned above, used the inverted pentagram as their holy symbol. There was no concept of evil attributed to it, and it was certainly not Satanic, since “Satan” had yet to be invented.
If one does use it in the Levi/Crowley tradition, understand the goat-head symbolizes primal creative energy, a.k.a. the libido or Kundalini. This energy is coherently symbolized in Trump XV: The Devil. Crowley’s card, the first version with the cohones to show this connection explicitly, shows the goat in front of a large erect penis.
Those who do not understand this psychosexual creative energy try to demonize it, while those who do, succumb to the creative bliss it bestows. Jimi Hendrix, rock god and legend, symbolizes this energy perfectly.
 Dogme et Rituel de la Haute Magie, (Transcendental Magic, its Doctrine and Ritual), 1855.