Hmmm, so Christopher Langen and Garnabby have both spent a portion of their lives developing what they call a "Theory of Everything."

per Wiki, as to Langen:

"Langan has developed an idea he calls the "Cognitive-Theoretic Model of the Universe" (CTMU)[3][6][8] which he maintains "explains the connection between mind and reality, therefore the presence of cognition and universe in the same phrase".[9] He calls his proposal "a true 'Theory of Everything', a cross between John Archibald Wheeler's 'Participatory Universe' and Stephen Hawking's 'Imaginary Time' theory of cosmology"[3] additionally contending that with CTMU he "can prove the existence of God, the soul and an afterlife, using mathematics."[1][4] Even so, Langan does not belong to any religious denomination, explaining that he "can't afford to let logical approach to theology be prejudiced by religious dogma".[9]"