A Summary of the Srimad Bhagavatham : Ch-2. Part-10.
2: The Process of Creation :
So where do we find ourselves now in our discovery? The source of our pain is not the world of objects, not merely the physical relationship, not the sense organs. It is something else, some power that drives the senses to objects and along channels which are untoward. This repository of energy, the reserve force which supplies the incentive for activity of the senses, is the antahkarana. Broadly, in English, we can call it the mind, generally speaking. The antahkarana is the internal organ.
Internal organ is what we call the psychological apparatus. We have broad divisions of these functions such as decision and understanding, which we call the buddhi in Sanskrit. We have got the function of self-arrogation and self-affirmation for the ego, or the ahamkara. There is the psychological function of retention of past experiences in memory, which is one of the functions of what we know as the chitta, and we have indeterminate perception and thinking and doubting in a general manner, which is supposed to be the function of the manas. It is mind in a general sense.
Now, these are only functions, but they are not different organs of action. These are various methods adopted by a single intelligent force within us in obtaining the objects of its desire. The mischief-maker is this central operative factory inside us; it is not merely a factory of machines, but an intelligent, self-operating machine. In a very special sense, we can call it an automobile not driven by a person, but automobile in the strict sense of the term, which moves by itself.
To be continued ...