Who said "We mustn't give up, no matter how difficult this seems."?

This quote is attributed to Velma Dinkley.

We mustn't give up, no matter how difficult this seems. - Velma Dinkley

"We mustn't give up, no matter how difficult this seems."

Velma Dinkley Perseverance

"Jinkies!"

"My glasses! I can't see without my glasses!"

"Let's split up, gang."

"This is no accident. There are clues here."

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."