Who said "Progress requires us to question what we think we know."?

This quote is attributed to Barbara Walters.

Progress requires us to question what we think we know. - Barbara Walters

"Progress requires us to question what we think we know."

Barbara Walters

News Anchor Interviewer American 1929–2022

"You feel terrific when you are healthy."

"Just do what you have to do, to do what you want to do."

"It's our future... we are going to spend the rest of our lives in the future."

"Most women have been conditioned into assuming that notes just happen to them and that they can't do much about it."