Yet Dumbledore goes to the hilltop

At the moment when he answers Snape’s call, he cannot know that Snape isn’t going to try and kill him. He can’t know that Snape will have the moral or physical courage to change course, let alone help defeat Voldemort. Yet still, Dumbledore goes to the hilltop.
— J.K. Rowling (Hilltop)

— Short essay about Dumbledore's motivation to agree to meet Snape after James and Lily's deaths (Hilltop)