Expression of the Inner Self

I'm finally finished this piece.

I was inspired to draw this from the concept of art therapy to draw what you feel.

As you can probably see, I am a math geek, and my thinking mostly revolves around logic. I am very much bound by logic. As such, I sometimes have difficulty understanding how other people think.

As for how I "feel", I drew a robot because I don't feel much. It could also be said that I do feel, but fail to acknowledge that I am feeling something. So I drew the character with no expression on his face, despite the scratches, cuts and burns and the burden.

Some other interesting notes:
The smaller numbers in the background are some of the digits of pi. You probably can't see all of them. The larger numbers are actual equations from math courses I have previously studied. They are mostly accurate to my knowledge. For those of you actually interested, they are the solutions to the wave equation and its Fourier coefficients, the solutions to the diffusion equation and its Fourier coefficients, and the Dirichlet and Neumann conditions for both of them, a solution to an interesting math question I got on a multivariable calculus test (it's a LaPlacian question involving the proof that the LaPlacian of uv = 0, provided that grad(u)grad(v) = 0 and the LaPlacian of u and v are zero), the polar and spherical coordinates, the coordinate method of solving a simple partial differential equation, a simpler solution to the wave equation (not including boundary conditions), the solution to the LaPlacian equation where the equation relies on r only, the definition of a derivative, and some isomorphisms of the group, Z_60.