Who said "Every darkness eventually yields to light"?

This quote is attributed to Mrs. Whatsit.

Every darkness eventually yields to light - Mrs. Whatsit

"Every darkness eventually yields to light"

Mrs. Whatsit Hope

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"

"Every day is a new opportunity."

"Hope is what gets us through difficult times."

"I'm not your enemy, kid. I'm trying to save you."

"Redemption is a long road."