Quote by 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."

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."