- Theory of Lie Groups
- The Theory of Light Gravity
- The Theory of Light, Space and Ourselves.
- Theory of Linear Operators in Hilbert Space
- Theory of Markov Processes
- The Theory of Material Mind
- The Theory of Matrices in Numerical Analysis
- The Theory of Particle Matter Frequencies and Multiple Universes
- Theory of Potential – the Illusion of Reality
- The Theory of Prime Number Classification
- Theory of Quadsitron-Energy Connectivity
- Theory of Quadsitron-Energy Connectivity
- Theory of Quantum Physics
- Theory of Relativity
- The Theory of Relativity and its Influence on Scientific Thought
- Theory of Satellite Geodesy
- The Theory of Sound, Volume One
- The Theory of Spinors
- Theory of the Earth - Volume I
- Theory of the Earth - Volume II
- Theory of the Earth, Volume 1 (of 4)
- Theory of the Earth, Volume 2 (of 4)
- Theory of the Origin and Existence of Human Beings on Earth
- Theory of the Transcendent Reality
- The Theory Of XY: Wake up before the 8th Coming!
- Theory On The Eternal Mind
- ThePlanets
- There Are Places in the World Where Rules Are Less Important Than Kindness
- There Are Seasons, Four in All!
- There is No Point of No Return
- There's No Such Thing as Bad Weather