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