Who said "Nothing is too difficult when you have a cause."?

This quote is attributed to Mrs. Whatsit.

Nothing is too difficult when you have a cause. - Mrs. Whatsit

"Nothing is too difficult when you have a cause."

Mrs. Whatsit Motivation

Character in A Wrinkle in Time

Buy "A Wrinkle in Time" on Amazon

"A tesseract is a wrinkle in time"

"You must go alone"

"The only way to cope with something deadly serious is to treat it a little lightly"

"Evil is powerless if the good are unafraid"

"I believe in working hard for what you want."

"Never underestimate the power of determination."

"I don't need a reason to fight."

"The most important thing is the mission. Nothing else matters."