Quote by Source Unknown
Thinking things has been done through the ages; knowing things remains to be done.
Summary
This quote suggests that throughout history, humans have consistently been able to generate ideas and contemplate various possibilities (thinking things). However, the real challenge lies in acquiring true knowledge and understanding (knowing things) which still needs to be achieved. It implies that although we are capable of coming up with countless thoughts, there is a constant necessity for further exploration and discovery in order to truly comprehend the world around us.