Harry Potter and the Order of the Phoenix

chapter 10 [Luna Lovegood] p.187-188
Harry slumped back in his seat and groaned. He would have liked Cho to discover him sitting with a group of very cool people laughing their heads off at a joke he had just told; he would not have chosen to be sitting with Neville and Loony Lovegood, clutching a toad and dripping in Stinksap

chapter 23 [Christmas on the Closed Ward] p.495
“We Slytherins are brave, yes, but no stupid. for instance, given the choice, we will always choose to save our own necks”

chapter 29 [the Beetle at Bay] p.560
Cho's hand was lying on the table beside her coffee, and Harry was feeling a mounting pressure to take hold of it. Just Do It.
(great nike attitude of you, Harry!!)

chapter 37 [the Lost Prophecy] p.825
“You will”, said Dumbledore sadly. “Becouse you are not nearly as angry with me as you ought to be. If you are to attack me, as I know you are close to doing. I would like to have thoroughly earned it.”

chapter 38 [the Second War Begins] p.869
“Are you threatening me, sir?” he (uncle Vernon) said, so loudly that passersby actually turned to stare.
“Yes, I am”, said Mad-Eye, who seemed rather pleased tat Uncle Vernon had grasped this fact so quickly