But people today distinguish between knowledge and action and pursue them separately, believing that one must know before he can act. They will discuss and learn the business of knowledge first, they say, and wait till they truly know before they put their knowledge into practice. Consequently, to the last day of life, they will never act and also will never know. This doctrine of knowledge first and action later is not a minor disease and it did not come about only yesterday. My present advocacy of the unity of knowledge and action is precisely the medicine for that disease.

(Wang Yangming)