Although the root of distress and happiness is the mind, intelligence and ego, a gross body is still required as an instrument for enjoyment. The gross body may change, but the subtle body continues to act. Unless the living entity gets another gross body, he will have to continue in a subtle body, or a ghostly body. One becomes a ghost when the subtle body acts without the help of the instrumental gross body. As stated in this verse, sayanam imam utsrjya svasantam. The gross body may lie on a bed and rest, and even though the machinery of the gross body is working, the living entity may leave, go into a dream, and return to the gross body. When he returns to the body, he forgets his dream. Similarly, when the living entity takes on another gross body, he forgets the present gross body. The conclusion is that the subtle bodymind, intelligence and egocreates an atmosphere with desires and ambitions that the living entity enjoys in the subtle body. Actually the living entity is in the subtle body, even though the gross body apparently changes and even though he inhabits the gross body on various planets. All the activities performed by the living entity in the subtle body are called illusory because they are not permanent. Liberation means getting out of the clutches of the subtle body. Liberation from the gross body simply involves the transmigration of the soul from one gross body to another. When the mind is educated in Krsna consciousness, or higher consciousness in the mode of goodness, one is transferred either to the upper, heavenly planets or to the spiritual world, the Vaikuntha planets. One therefore has to change his consciousness by cultivating knowledge received from Vedic instructions from the Supreme Personality of Godhead through the disciplic succession. If we train the subtle body in this life by always thinking about Krsna, we will transfer to Krsnaloka after leaving the gross body. This is confirmed by the Supreme Personality of Godhead.