I can handle my cutlery

"Listen to me, Harry. It is too late, you understand me? You must see that Professor Snape's version of events is far more convincing than yours."
"He hates Sirius," Hermione said desperately. "All because of some stupid trick Sirius played on him--"
"Sirius had not acted like an innocent man. The attack on the Fat Lady--entering Gryffindor Tower with a knife--without Pettigrew, alive or dead, we have no chance of overturning Sirius's sentence."
"But you believe us."
"Yes, I do," said Dumbledore quietly. "But I have no power to make other men see the truth, or to overrule the Minister of Magic. . . .
Harry stared up into the grave face and felt as though the ground beneath him were falling sharply away. He had grown used to the idea that Dumbledore could solve anything. He had expected Dumbledore to pull some amazing solution out of the air. But no. . .their last hope was gone.
"What we need," said Dumbledore slowly, and his light blue eyes moved from Harry to Hermione, "is more time." (Hermione's Secret)