Who said "Imagination is the bridge between worlds"?

This quote is attributed to Mrs. Which.

Imagination is the bridge between worlds - Mrs. Which

"Imagination is the bridge between worlds"

Mrs. Which Imagination

Character in A Wrinkle in Time

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"The mind power of evil is great"

"Your father needs you"

"IT thinks with the brains"

"Evil requires conformity"

"Imagination is more powerful than knowledge."

"The world is full of wonders if you know where to look."

"You have the imagination of a child, Lucy"

"The world is full of mysteries waiting to be solved."