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… - J.K. Rowling

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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.