Pentagram

• Christ, because of the Five wounds of Christ
• Pointing downward, is a sign of evil, of the Devil
• Hidden knowledge, because of its association with the Occult
• Five Elements:
  • Greek: Earth, Water, Air, Fire, and Aether
  • Chinese: Fire (火 huǒ), Earth (土 tǔ), Metal (金 jīn), Water (水 shuǐ), and Wood (木 mù).

See:

• http://en.wikipedia.org/wiki/Pentagram
• http://en.wikipedia.org/wiki/Sir_Gawain_and_the_Green_Knight#Pentangle
  • "The poet explains that each of the five interconnected points represents a virtue tied to a group of five. Gawain is keen in his five senses, dextrous in his five fingers, faithful to the salvation provided through the Five Wounds of Christ, takes courage from the five joys that Mary had of Jesus, and exemplifies the five virtues of knighthood."
  • Chivalry: "friendship, generosity, chastity, courtesy, and piety"
• http://en.wikipedia.org/wiki/Classical_elements