One thing I got out of my studies (such as they were) of the Standard Model, is that a true TOE (Theory of Everything) could be ultimately summarized as an equation with all of creation on one side, and a zero on the other. In English: All that exists is merely another expression of nothingness. At a point, though, the math was simply beyond me.
All known symmetries do not add up to 1; they balance out to zero. All except gravity, the odd man out, and that may change the whole picture. But a TOE that incorporates gravity is still a dream.