Antonie van Leeuwenhoek Quotes

Man has always to be busy with his thoughts if anything is to be accomplished.

Whenever I found out anything remarkable, I have thought it my duty to put down my discovery on paper, so that all ingenious people might be informed thereof.

In the year 1657 I discovered very small living creatures in rain water.

I've spent more time than many will believe [making microscopic observations], but I've done them with joy, and I've taken no notice those who have said why take so much trouble and what good is it?