So the thinking faculty or the psychic faculty becomes the interior controlling agent of the other external sheaths, viz. The sense-organs are contained in this body. The Prana is the synthesised form of Rajasic force and the Karmendriyas or the organs of action are the discrete or the diversified forms of the same energy. So we may say that all our activities are nothing but Prana working. But these activities have ideas behind them, thoughts behind them.
Thoughts precede action.
The mind together with the senses of knowledge constitute the Manomaya Kosha, or the mental sheath. Here we are in an animal level practically. In the Pranic level we are like vegetables, and in pure physical level we are like inanimate matter. But in the thinking level we are like animals, and only in the intellectual level we are superior to the animals. That is a still higher stage.