Who said "I trust not in theory but in what my eyes can verify."?

This quote is attributed to Antonie van Leeuwenhoek.

I trust not in theory but in what my eyes can verify. - Antonie van Leeuwenhoek

"I trust not in theory but in what my eyes can verify."

Antonie van Leeuwenhoek Truth

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."

"Lucy, you got some 'splainin' to do!"

"You must always be honest with the people you love."

"Truth always comes out in the end."

"Honesty is always the best policy."