" One of the many things I learned at the end of that Classics corridor, down which I ventured at the age of eighteen in search of something I could not then define, was this, written by the Greek author Plutarch: 'What we achieve inwardly will change outer reality'.
That is an astonishing statement, and yet proven a thousand times every day of our lives. It expresses, in part, our inescapable connection with the outside world, the fact that we touch other people's lives simply by existing. "

― J.K. Rowling , Very Good Lives: The Fringe Benefits of Failure and the Importance of Imagination