A kung fu master, even many years After the height of his craft, still studies.  

When I was in India to teach the Yoga Instructor Teacher Training Course, the oldest living disciple (and monk) of Swami Shivananda said to me, “So you’re here to Teach.”

I replied, “… And to LEARN”.

He said, “Yes. You cannot be a Teacher unless you are also a Student.”

Live just like a kung fu master.