To take it literally, I think it's something along the lines of, "I cannot and will not ever understand how or why the universe works, but our love is simple and something I get." I want to say the first two lines, about lightning and clay, are saying, "Regardless of my lack of understanding, I can still function and go on," although that seems a bit unlikely, since the alternates offered are both nature-based, as well.
To take it literally, I think it's something along the lines of, "I cannot and will not ever understand how or why the universe works, but our love is simple and something I get." I want to say the first two lines, about lightning and clay, are saying, "Regardless of my lack of understanding, I can still function and go on," although that seems a bit unlikely, since the alternates offered are both nature-based, as well.