A man has always to be busy with his thoughts if anything is to be accomplished. Antonie van Leeuwenhoek
A 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. Antonie van Leeuwenhoek
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.
