Actually the quote is "Use the force, Luke," not 'Harry,' and it wasn't Gandalf, it was Obi-Wan Kenobi. And the photo featured here isn't of either Obi-Wan Kenobi or even Gandalf but of Shakespearean actor Patrick Stewart, who famously portrayed Captain Picard on the television series Star Trek: The Next Generation and its subsequent film adaptations.
lmao