J.K. Rowling: We don't need magic to change the world

If you choose to use your status and influence to raise your voice on behalf of those who have no voice; if you choose to identify not only with the powerful, but with the powerless; if you retain the ability to imagine yourself into the lives of those who do not have your advantages, then it will not only be your proud families who celebrate your existence, but thousands and millions of people whose reality you have helped change. We do not need magic to change the world, we carry all the power we need inside ourselves already: we have the power to imagine better.

J.K. Rowling, commencement address, "The Fringe Benefits of Failure, and the Importance of Imagination," Harvard University, June 2008