The Art of Unlearning

One of my friend asked me

"I have 3 PhD's. I am the secretary of a few associations.
I have learnt a lot.

But I still feel that I am missing something.
Why?"

The best answer I can source is..

If you had also learnt how to unlearn what you learnt,
you will not feel this way. When you learn to drop all your so-called knowledge,
every moment will be a fresh and evolving
and you will never feel you are missing something.

Remember, only empty cups can be filled.