Adi Shankara sings beautifully in the verses of Bhaja Govindam-
Within the potter's wheel's rotation,
The pivot stands still, amidst constant motion,
So too a man of perfection
Is poised, although engaged in action.-
When you understand that you are unclutched, suddenly you realize you are like the pivot of the potter's wheel, unmoving and untouched by the kind of pot being made, the kind of experience being felt.'