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.
Outside and above the mind there is the play of a consciousness which is lighted by the higher Truth, but man is not conscious of it and of that he has to be conscious.
The Atheist is God playing at hide and seek with Himself; but is the Theist any other? Well, perhaps; for he has seen the shadow of God and clutched at it.
An aimless life is always a troubled life. Every individual should have an aim. But do not forget that the quality of your aim will depend the quality of your life. Your aim should be high and wide, generous and disinterested; this will make your life precious to yourself and to others. Whatever your ideal, it cannot be perfectly realized unless you have realized perfection in yourself.
The human mind moves always forward, alters its viewpoint and enlarges its thought substance, and the effect of these changes is to render past systems of thinking obsolete or, when they are preserved, to extend, to modify and subtly or visibly to alter their value.
Thus to act under the guidance coming from above, this is one side of the sadhana, the dynamic side. The other one is the discrimination between the Purusha and the Prakriti. The Purusha will calmly observe, give sanction, choose, but will realise that all this does not belong to him - all these are outside him. This is the static side of the sadhana. These two aspects constitute the basis of Yoga.
In order to explain why the ordinary Sadhus and Yogis take to tobacco and gānja [an intoxicant], I said that these cause stimulation of the physical brain. But these have reactions. And to stimulate the brain thus is not the proper process.
Those who have advanced rise to the mind which is in the head, - they have the play of their mental movements in the head itself. But all these are inside the body; man is, as it were, shut up in a box, his entire consciousness is confined within the organism. This imprisonment has to be undone.
To be free from all egoistic motive, careful of truth in speech and action, void of self-will and self-assertion, watchful in all things, is the condition for being a flawless servant.