An individual is the product of his/her Environment
I came up with this theory in high school.
There are five known inputs to the human mind. These are the five senses: seeing, hearing, smelling, feeling and tasting. I believe that we are all born equal. We all start from ground zero. From the moment we are born, these inputs begin making their impression on our minds. These inputs are a direct result of the environment that we are born into and from our experiences in that environment.