Quote Origin: Whatever We Achieve Inwardly Will Change Outer Reality

J. K. Rowling? Anaïs Nin? Plutarch? Otto Rank? Question for Quote Investigator: J. K. Rowling created the beloved fantasy universe of Harry Potter and the Hogwarts School of Witchcraft and Wizardry. She delivered a humorous and touching commencement address at Harvard University in 2008. While in college she studied the classics, and her address included …