J.K. Rowling > Quotes > Quote > Kirk liked it

“One of the many things I learned at the end of that Classics corridor down which I ventured at the age of 18, 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