Who said "The mind is not a book to be read and closed. It is infinite."?

This quote is attributed to Professor X.

The mind is not a book to be read and closed. It is infinite... - Professor X

"The mind is not a book to be read and closed. It is infinite."

Professor X Knowledge

"Mutants. Since the discovery of their existence they have been regarded with fear and suspicion by humanity."

"We are the future, Charles, not them. They no longer matter."

"Just because someone stumbles and loses their way doesn't mean they're lost forever."

"What we have to fear is fear itself."

"We're not just after treasure. We're preserving history."

"The mind is humanity's greatest tool."

"A tidy room reflects a tidy mind."

"You can learn a lot about a person by how they keep their space."