Those to whom worshiping is a window, to open but also to shut, have not yet visited the house of their souls whose windows are open from dawn to dawn.
Each man, if he attempts to join himself to others, is on all sides cramped and diminished of his proportion; and the stricter theunion, the smaller and the more pitiful he is. But leave him alone, to recognize in every hour and place the secret soul, he will go up and down doing the works of a true member, and, to the astonishment of all, the work will be done with concert, though no man spoke.
The Bhagavad-Gita calls on humanity to dedicate body, mind and soul to pure duty and not to become mental voluptuaries at the mercy of random desires and undisciplined impulses.
He was simply and staunchly true to his duty alike in the large case and in the small. So all true souls ever are. So every true soul ever was, ever is, and ever will be. There is nothing little to the really great in spirit.
The seat of the soul and the control of voluntary movement - in fact, of nervous functions in general, - are to be sought in the heart. The brain is an organ of minor importance.