Four parts of mind

The fours parts of mind are :

Buddhi - The Intellect
Buddhi or the intellect cannot function without a certain bank of memory or data. Depending on the data you have, the intellect plays around. Suppose in your memory system, there are 10 gigabytes of memory. Depending on how sharp your buddhi is, one person can produce, let’s say, a trillion thoughts with these 10 gigabytes. Someone else can produce 10 trillion thoughts with the same 10 gigabytes of memory.

Manas - A Huge Silo of Memory
The next dimension is called manas. Manas has many layers to it. But manas is not just the brain – it is right across the body. Every cell in the body has a phenomenal memory – not just of this life but of millions of years. Your body clearly remembers how your forefathers were a million years ago. Top to bottom, there is manas – this is called manomaya kosha. In every cell in the body, there is memory and intelligence, but no intellect. Intellect is only in the brain.

Ahankara - The Sense of Identity
The intellect directly connects with the third dimension of your mind, called ahankara. Ahankara is sometimes translated as ego, but it is much more than that. Ahankara gives you a sense of identity. Once your ahankara takes on an identity, your intellect functions only in that context. It is important to function beyond the intellect, because the intellect is seriously enslaved to your identity.

Chitta - The Cosmic Intelligence
The fourth category of the mind is called chitta. Chitta is mind without memory – pure intelligence. This intelligence is like the cosmic intelligence – simply there. Everything happens because of that. It does not function out of memory – it simply functions. In a way, what you call cosmos is a living mind, not in the sense of intellect but in the sense of chitta. Chitta is the last point of the mind. It connects to the basis of creation within you. It connects you with your consciousness.