Symbols are images that represent an idea comprising a universal truth and the signs offer a simple message of immediate relevance. Civilizations: Egyptian. Maya. Celta. Greek. Romana. Viking. Inca. Azteca. Religious: Christianity. Judaism. Islamism. Daoism. Shintoism. Hinduism. Buddhism. Sikhism. Esoteric: Wicca. Alchemy. Zodiac. Tarot. Numerology. Kabbalah. Chakras. Runes.