In plain words
He fell into the craving to carry off Sītā. He followed only his mind. So Rāvaṇa became a rākṣasa. Without this one trait, Rāvaṇa would be no rākṣasa at all; he would be a supreme devotee. So, if any desire begins in your mind, take some time! Do not follow it. Give the Buddhi a chance to work there. Is it good or bad? Is it right or wrong? Use the discrimination that asks this! One who does so enters the principle of the Ātma. That is why following the body is beasthood and following only Manas is demonhood. In this way there are four kinds among men: beasthood, demonhood, humanness and divinity. You have the freedom to decide which of these you will follow.
Suṣupti is what is beyond the senses
We must take the principle of the Ātma as the chief thing. We must give our heart the strength it needs. This heart is not the ‘physical heart’. The physical heart is merely like a ‘switchboard’! If there is no current, what use is the switchboard? Where is the real current for it? ‘Nīlatoyada madhyasthā dvidyullekheva bhāsvarā! Nīvāra śūkavattanvī….’ Prāṇa dwells inside the spinal cord of thirty-three rings, between these two, 9 and 12. Prāṇa is not in the heart. If prāṇa really lived in the heart: today they take out one heart and put in another. When they take that one out and put this one here, where did the prāṇa go? So they change only the switchboard. Prāṇa dwells elsewhere. There is the word ‘suṣupti’. Su-ṣupti. That is, good sleep. What is this good sleep? Suṣupti is what is beyond these three: the senses, Manas and Buddhi. Suṣupti is not snoring away in sleep and calling it good sleep. To live with the senses subdued, the rush of the mind checked and desires kept under some control: that is what they called suṣupti. It is not merely shutting your eyes and sleeping.