Original pattern, model, prototype, or blueprint. According to modern, psychological astrology, archetypes are the primordial images that form the structural basis for our subconscious motivations, expressed symbolically by planets, signs and other astrological motifs. Though the self-actualisation ideals of modern astrology were conceived in the theosophical schools of the 19th century, using archetypes as motivators derives from the 20th century psychoanalytic theories of Jung.