Physics is the study of Self.

The science books once stated that physics is the study of matter and energy and their relationships. I think it's fair to say that this is an abstraction. Truth is simple in reality. Physics is the study of self. And so as self continues to study itself, self is bound to discover that all differentiation is but self-desired, self-caused and self-perceived so self would not feel by itself, so self could experience companionship, so self could experience friendship, so self could experience love. For such is the purpose of self; all this so to love and be loved in endless return.
~ Wald Wassermann