XVI

There are a hundred and one nerves of the heart. One of them penetrates the centre of the head. Going upward through it, one attains immortality. The other (hundred nerve-courses) lead, in departing, to different worlds.

The nervous system of the body provides the channels through which the mind travels; the direction in which it moves is determined by its desires and tendencies. When the mind becomes pure and desireless, it takes the upward course and at the time of departing passes out through the imperceptible opening at the crown of the head; but as long as it remains full of desires, its course is downward towards the realms where those desires can be satisfied.