Quoting Hermione In Philosopher's Stone

"Are you sure that's a real spell? Well, it's not very good is it? I've tried a few simple spells myself and they've all worked for me. Nobody in my family's magic at all, it was ever such a surprise when I got my letter, but I was ever so pleased, of course, it's the best school of witchcraft there is I've heard - I've learned all the course books by heart of course. I just hope it will be enough - I'm Hermione Granger, by the way, who are you?"

"I hope you're pleased with yourselves. We could have been all killed - or worse, expelled."

"You're saying it wrong," Harry heard Hermione snap. "It's Wing-gar-dium Levi-o-sa, and make the 'gar' nice and long."

"Neville, I'm really, really sorry about this." She raised her wand. "Petrificus Totalus!"

"Flitwick told me in secret that I got a hundred and twelve percent on his exam. They're not throwing me out after that."

"Books! And cleverness! There are more important things--friendship and bravery and--oh Harry--be careful!"

Quoting Hermione In Chamber of Secrets

"At least no one on the Gryffindor team had to buy their way in. They got in on pure talent."

"Merry Christmas to you too," said Hermione. "I've been up for nearly an hour, adding more lacewings to the potion. It’s ready."