Sarah

“Sirius looked out of the fire at Harry, a crease between his sunken eyes.
“You’re less like your father than I thought,” he said finally, a definite coolness in his voice. “The risk would’ve been what made it fun for James.”
“Look —”
“Well, I’d better get going . . . I’ll write to tell you a time I can make it back into the fire, then, shall I? If you can stand to risk it?”
There was a tiny pop, and the place where Sirius’s head had been was flickering flame once more.”
― J.K. Rowling, Harry Potter and the Order of the Phoenix

“I solemnly swear that I am up to no good.”
― J.K. Rowling, Harry Potter and the Prisoner of Azkaban

“He's not a child!" said Sirius impatiently.

"He's not an adult either!" said Mrs. Weasley, the color rising in her cheeks. "He's not James, Sirius!"

"I'm perfectly clear who he is, thanks, Molly," said Sirius coldly.

"I'm not sure you are!" said Mrs. Weasley. "Sometimes, the way you talk about him, it's as though you think you've got your best friend back!”
― J.K. Rowling, Harry Potter and the Order of the Phoenix

“Did you like question ten, Moony?" asked Sirius as they emerged into the entrance hall.
"Loved it," said Lupin briskly. "Give five signs that identify the werewolf. Excellent question."
"D'you think you managed to get all the signs?" said James in tones of mock concern.
"Think I did," said Lupin seriously, as they joined the crowd thronging around the front doors eager to get out into the sunlit grounds. "One: He's sitting on my chair. Two: He's wearing my clothes. Three: His name's Remus Lupin...”
― J.K. Rowling, Harry Potter and the Order of the Phoenix