Just like we give up our old dress and accept a new dress, similarly this body, when it is old enough, we give it up and accept another body, just like this child has accepted. We are also child, then body changes, and when it is too much old, then the spirit soul gives it up, accepts another.
So the spirit soul has form, but it is so small that this materialist cannot estimate what is the length and breadth. That is material science. They can estimate via media. They cannot estimate the smallest, and they cannot estimate the greatest. They cannot make any measurement of the outer space, nor they can make any measurement of the minute particles of spirit soul.
But there is measurement. That is stated in Vedic literature, that one ten-thousandth portion of upper tip of your hair is the measurement of the soul. But they have no instrument, they cannot measure. Therefore out of frustration they say it is formless. But there is form. Just like they say that a point has no length and breadth. That is nonsense. Point has length and breadth, but you have no measuring instrument. That's all. Similarly, the impersonalist, they cannot measure the great and the small.
The difference is He is great, we are small. He is infinite, and we are infinitesimal. Otherwise, qualitatively we are one. Just like a drop of seawater and the vast mass of seawater, they are qualitatively one. But quantitatively there is no comparison between the vast mass of seawater and the drop of seawater.
So this Kṛṣṇa consciousness process is that we accept our position as drop in comparison with the infinite. We are small. God is great and you are small. So our position is to serve the great. That is natural. Anywhere you find the smaller is serving the greater. And because God is great, He is greater than anything else, asamaurdhva. There is nothing greater than God or nothing equal to God. Therefore everyone is smaller than God, and his constitutional position is to serve God. That is Kṛṣṇa consciousness. That is our constitutional position.