"Hello, Minister!" bellowed Percy, sending a neat jinx straight at Thicknesse, who dropped his wand and clawed at the front of his robes, apparently in awful discomfort. "Did I mention I'm resigning?"
Percy Weasley in Harry Potter and the Deathly HallowsI must admit that I have always been afraid that you would take what we might call the "Fred and George" route, rather than following in my footsteps.
Percy Weasley in Harry Potter and the Order of the Phoenix"Penelope and I have got a bet on," he told the team. "Ten Galleons on the outcome of the match!"
Penelope put the Firebolt down again, thanked Harry and went back to her table.
"Harry - make sure you win," said Percy, in an urgent whisper. "I haven't got ten Galleons."
"I was a fool!" Percy roared, so loudly that Lupin nearly dropped his photograph. "I was an idiot, I was a pompous prat, I was a - a -"
"Ministry-loving, family-disowning, power-hungry moron," said Fred.
Percy swallowed. "Yes I was!"
Percy: "That's Professor Snape, head of Slytherin House."
Harry: "What's he teach?"
Percy: "Potions. But everyone knows it's the Dark Arts he fancies. He's been after Quirrell's job for years."
It's never too early to think about the future, so I'd recommend Divination.
Percy Weasley in Harry Potter and the Chamber of Secrets