This physiological condition is present in your body. You are taking your foodstuff. The necessary juice, vitamins, are taken by the stomach. It is distributed, and the exhaustion of your body is supplemented, and the unnecessary things evacuated by stool, urine. The nice thing is going on.
Now, as soon as this consciousness is stopped, will this function go any more? No. You will find the same brain is there; the same heart is there; the same stomach is there by dissection of the body. You will see the same veins. Everything is there complete. But only thing is wanting—that consciousness. Therefore everything is stopped. This is a common factor. Everyone can know it.
Similarly, the whole cosmic manifestation which is present before you, so nicely going on, don't you think there is a consciousness behind it? How can you deny, that there is no consciousness in the matter of sun rising, moon rising, seasonal changes, and so many planets floating in the air? So many wonderful things are being done in the material nature. Do you think it is without being done, consciousness? No. There is also consciousness.
Just like for the management of your own body, due to the consciousness everything is being well done, similarly, everything that you see very nicely well done in the material nature, that is also being done by superior consciousness. This is human reasoning. How can you deny it? Can you deny it? I don't think any sane man can deny it.
Similarly, as your consciousness is a symptom of your presence, you are spirit soul, similarly, the supreme consciousness is the symptom of the supreme soul, or God, the supreme God. This is the position. Now, as consciousness, we are part and parcel of the supreme consciousness. Therefore, the whole business of our life is to dovetail our activities with the supreme plan. That is called karma-yoga. That is called karma-yoga.