Who said "The joy is in the discovery and the understanding."?

This quote is attributed to Richard Feynman.

The joy is in the discovery and the understanding. - Richard Feynman

"The joy is in the discovery and the understanding."

Richard Feynman Happiness

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."

"Babalú!"

"My greatest joy is making people smile."

"Laughter and love make a home."

"The best things in life are free."