In plain words
Embodiments of Prema! All the festivals of Bhārata, every one of them, are truly filled with a most divine meaning. Many festivals have come about in Bhārata to show the divinity that lies within humanness. Today is called Dīpāvali; this Dīpāvali, full of a holy meaning and full of an ideal, is one that gives humanity a number of teachings. The special greatness a lamp has belongs to no other thing in this world. A lamp drives away the darkness and shows the path. By this very light man enters into one kind of work or another in his daily life. The very nature that drives away darkness is the special power of this lamp. It has a second power too. Wherever you set a lamp, its flame shows the upward course. Even when you put a lamp in a pit, its bright flames travel only upward. It never turns downward at all. The ancients have taught that this very upward course is the divine path of Jñāna, the path to God. And of the lamp's flames travelling downward, they have taught that this is Ajñāna, this is the life of a demon. In this lamp two kinds of mighty power have shown themselves. To drive away Ajñāna, which is tamoguṇa, and to show the upward course to the divinity that is God: this, it has shown, is the chief mark of this flame. But this lamp drives away only the physical darkness, the worldly darkness that belongs to life in the world; it has no power to light the inner flame. Hanumān entered Laṅkā solely to search for Sītā, and in his anger against Rāvaṇa he set fire to Laṅkā, so that at midnight he made Laṅkā seem as though it were full, broad daylight. To the worldly, natural world this Laṅkā looked like day, but the darkness of mind in Rāvaṇa was not driven away in the least. These physical lights drive away only worldly darkness and show the path; they cannot light the inward flame of the Ātma and show the true light of Jñāna. Rāvaṇa was no ordinary person. He was born of a portion of Brahmā. He was Kubera's elder brother. He was the younger brother of the mighty Kumbhakarṇa. He had a son called Indrajit, who had conquered Indra.