I am me.

That is that I am a sum of all of my parts.

I am my flesh shaped by genetics and I am my impulses shaped by life.

Ultimately these shape my thoughts and thus form me as a person.

I think therefore I am.

I am only what I think myself to be and how I think about things that I observe is how they are.

Thus the world is created around me with each new piece of information I receive altering my perception of the world and ultimately the world itself.

Reality is what I perceive it to be.