Claire

“You could say sorry," suggested Harry bluntly.
"What, and get attacked by another flock of canaries?" muttered Ron.
"What did you have to imitate her for?"
"She laughed at my mustache!"
"So did I, it was the stupidest thing I've ever seen.”
― J.K. Rowling, Harry Potter and the Half-Blood Prince

“Two things are infinite: the universe and human stupidity; and I'm not sure about the universe.”
― Albert Einstein

“Piglet sidled up to Pooh from behind.
"Pooh!" he whispered.
"Yes, Piglet?"
"Nothing," said Piglet, taking Pooh's paw. "I just wanted to be sure of you.”
― A.A. Milne, The House at Pooh Corner

“The fool doth think he is wise, but the wise man knows himself to be a fool.”
― William Shakespeare, As You Like It