Who said "The material world may not be the only world that exists."?

This quote is attributed to Gödel, Kurt.

The material world may not be the only world that exists. - Gödel, Kurt

"The material world may not be the only world that exists."

Gödel, Kurt Philosophy

Logician-Mathematician Austrian-American 1906–1978

"I am confident that there is a complete (finite) system of axioms sufficient to prove all mathematical truths and no falsehoods."

"The more I think about language, the more it amazes me that people ever understand each other."

"A mathematician prefers to avoid even a minor error."

"Either mathematics is too big for the human mind or the human mind is more than a machine."

"I've seen the worst humanity has to offer."

"Sometimes I wonder if the world is worth saving."

"Every choice shapes our destiny."

"Order is the foundation of a good life."