Everything that we view outside of ourselves as the observers were once part of our inner natures; this is why everything has yin and yang or speculative side and operative side. Furthermore, we developed that into spiritual science, where we use Gematria and numerology to measure our different virtue & principles our Astrology. If we play them out, we can summon a god, which is infinity possibility. But as spirits, we live in fluid/influences we experience many thoughts and feelings, which make us get lost in our mind and lose spatial awarenss (Mutuable sign). Therefore, we will use EXTERNAL things to psyche our subconscious with virtue & principle that you want to be REMIND of when YOU get lost in Astro influence/Fluids of the full moon. For this reason, Rituals and Spells are a way of acting out a Thought & Feelings which help freeze or lock concepts in your mind and field of reality, and how much intent you give it helps stick in Your mind and manifest faster, think of your intention as your energy source.