What is the difference between the spirit souls comprising the Brahmajyoti and the spirit souls here in Maya?

Expressions researched:
"difference between the spirit souls comprising the Brahmajyoti and the spirit souls here in Maya"

1969 Correspondence

In the Brahmajyoti the spirit souls on account of their impersonal views are devoid of a body, exactly like here in Maya there are ghosts who are devoid of any gross bodies. The spirit souls in the Brahmajyoti, although they have no desire for sense gratification, still they feel inconvenience like the ghost, and they fall down again in the Maya's atmosphere and develop a material body.

Letter to Rupanuga -- Los Angeles 24 July, 1969:

Regarding your question, "what is the difference between the spirit souls comprising the Brahmajyoti and the spirit souls here in Maya?", in the Brahmajyoti the spirit souls on account of their impersonal views are devoid of a body, exactly like here in Maya there are ghosts who are devoid of any gross bodies. The ghost being devoid of a body, he suffers terribly because he is unable to satisfy his senses. The spirit souls in the Brahmajyoti, although they have no desire for sense gratification, still they feel inconvenience like the ghost, and they fall down again in the Maya's atmosphere and develop a material body. In the Bhagavat therefore it is said that persons who are impersonalists and do not develop the dormant devotional attitude, their intelligence is not pure, because for want of a spiritual body, they come down again to the material world. In the Bhagavad-gita it is clearly said by the Lord that the only way of not coming back to the material world is to be promoted to the spiritual planets. For the impersonalists there is no such assurance of not falling down in the whole Vedic literature. The conclusion is that without developing the spiritual body and without being situated on one of the spiritual planets, the so-called liberation is also illusion, or it is not complete. A spirit soul who falls down from the Brahmajyoti to the Kingdom of Maya may have a chance of associating with a pure devotee, and then he may be elevated to the spiritual planets of Vaikuntha or to Goloka Vrindaban. From the Brahmajyoti there is no direct promotion to the spiritual planets, and it is clearly stated in the Bhagavatam that such souls fall down: patanty adha.