The language of the Veda itself is sruti, a rhythm not composed by the intellect but heard, a divine Word that same vibrating out of the Infinite to the inner audience of the man who had previously made himself fit fot the impersonal knowledge.
The Force which has to be called down from above must be pure and quiet because there are all kinds of forces - it will not do to call them all. And one must have sincerity.
Everyone has in him something divine, something his own, a chance of perfection and strength in however small a sphere which God offers him to take or refuse. The task is to find it, develop it & use it. The chief aim of education should be to help the growing soul to draw out that in itself which is best and make it perfect for a noble use.
On the top of the head is a Chakra - Sahasradala or the thousand-petalled lotus. There is a Chakra in the middle of the forehead between the eyebrows and one in the heart-centre. The region between the navel and head constitutes the mental field. From navel downward extending till the terminus of the spinal chord, mūlādhāra, is the seat of the vital.
What do you want to do sadhana for? The aim should not be the satisfaction of egoism: "I want to be a great yogi; I shall have so much power and with that power I shall establish myself in the world." All such thoughts must be thrown far away.
The Truth-power must be brought down from above into that state of peace, and this higher power - Parashakti - will directly guide the vehicle - ādhāra - and transform it.