What I hear I forget, what I see I remember, what I do I understand

Confusius

551 - 479 BC

The principles of learning described by the Chinese philosopher and reformer Confucius.

They inspire to take action on what you have learned.

Two tips to use your knowledge and understand better: 

  1.   Physically attain something.
    For example, practise playing an instrument, write that piece of content along the learned principles, etc.
    It does not need to be perfect, you will learn while doing! 
  2.   Teach others what you learned.
    Share your knowledge, by explaining you will better understand what you learned.