Who said "The work of understanding is never truly finished."?

This quote is attributed to Hermann Muller.

The work of understanding is never truly finished. - Hermann Muller

"The work of understanding is never truly finished."

Hermann Muller Work

Geneticist American 1890–1967

"Life is what happens when you're busy making other plans"

"The only way to do great work is to love what you do"

"In the middle of difficulty lies opportunity"

"Be yourself; everyone else is already taken"

"Hard work never killed anybody."

"Work with purpose and integrity."

"Hard work pays off in the end."

"A man's gotta do what a man's gotta do."