Who said "A scientist's work is never finished, only paused."?

This quote is attributed to Antonie van Leeuwenhoek.

A scientist's work is never finished, only paused. - Antonie van Leeuwenhoek

"A scientist's work is never finished, only paused."

Antonie van Leeuwenhoek Work

Microscopist and Biologist Dutch 1632–1723

"I have always endeavored to use my eyes as accurately as possible."

"The more one observes, the more one sees."

"Nature is the greatest teacher if we are patient enough to listen."

"I do not pretend to know more than I can see with my own eyes."

"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."