Who said "The most important thing is not to stop questioning."?

This quote is attributed to Richard Feynman.

The most important thing is not to stop questioning. - Richard Feynman

"The most important thing is not to stop questioning."

Richard Feynman Imagination

Theoretical Physicist American 1918–1988

"The first principle is that you must not fool yourself, and you are the easiest person to fool."

"What I cannot create, I do not understand."

"The pleasure of finding things out is the most important thing."

"You don't have to know everything to do something."

"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."