Quote by Antonie van Leeuwenhoek

"I have found that those who claim to know everything have looked at almost nothing carefully."

Antonie van Leeuwenhoek
Microscopist and Biologist Dutch 1632–1723

More from Antonie van Leeuwenhoek

"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."

All quotes by Antonie van Leeuwenhoek