Who said "Work is what separates the great from the mediocre."?

This quote is attributed to Dr. Krieger.

Work is what separates the great from the mediocre. - Dr. Krieger

"Work is what separates the great from the mediocre."

Dr. Krieger Work

"I'm not insane, I'm just not sane in the traditional sense."

"You know what they call me in the lab? Doctor. Because I have a PhD."

"Science doesn't care about your feelings."

"I've done worse things before breakfast."

"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."