What is imagination? Where does thought come from? It  is important to understand these things. If we ignore these questions then many realities will remain hidden and the chain of truth, which is linked to understanding this problem, will remain unknown. Whenever a thought comes to mind it has some universal reason. The incoming thoughts prove that some vibration has occurred in the brain. This vibration is not the vibration of the brain itself but is related to those wires of the universe that moves the system of the universe in particular pattern. For example, a strong wind current means that some vibration has occurred in the atmosphere. Similarly, when at thought comes in the human mind it means that some vibration has occurred in the subconscious mind to cause the understanding of this phenomenon to be dependent on the human brain itself.