Somehow or other we have fallen in this material world. There are many causes, but as we are in this material world, it is to be taken that somehow or other we have come here. Light, the sparks of fire... There is fire, and there are sparks. Everyone has got this experience. So the sparks are coming and dancing within the fire. It is also brilliant and it is also fire. If a small spark of fire falls on your cloth, immediately it will burn. It will immediately make a black spot. We have got this experience. Because although it is small, but it is fire. Therefore it burns. Similarly, we are a small particle, part and parcel of God. Just like the spark, it falls down from the fire. There may be three conditions. The spark may fall down on the ground, the spark may fall down on the water and the spark may fall down on some dry grass. So if the spark falls down on the dry grass, then it may, again, makes another fire. And if the spark falls down on the water, then it is completely finished. And if it falls down on the ground, then it may continue as fire for some time, then it becomes extinguished.
Anyway, in these three conditions... So when we fall down in this material world... The material world is of three modes of material nature, goodness, passion and ignorance. So if we acquire the quality of goodness, there is chance of enlightenment, knowledge, so that again fire can be generated. But if we fall down on the water, practically it is finished. Ignorance. So sattva-guṇa, rajo-guṇa, tamo-guṇa. So in our fallen condition, mostly the rajo-guṇa and tamo-guṇa is very prominent, in our fallen condition, in this material condition. So symptoms of rajo-guṇa and tamo-guṇa means material desires and greediness. And sattva-guṇa means enlightenment. If we cultivate the sattva-guṇa quality, just means, if we cultivate the brahminical qualification, that is the platform of sattva-guṇa. So that is described in the Bhagavad-gītā, satyaṁ śamo damas titikṣā ārjavaṁ jñānaṁ vijñānam āstikyaṁ brahma-karma svabhāva-jam (BG 18.42). If we cultivate this kind of life, to be truthful, to be peaceful, to be tolerant, to be men of wisdom, knowledge, faith in God and the śāstras, in this way there are nine to twelve qualities. If we acquire that qualities, then we become brāhmaṇa.
Brāhmaṇa means there is chance of understanding Brahman. Brahma jānāti iti brāhmaṇa. And this human life is meant for inquiring about Brahman. Athāto brahma jijñāsā. This is the first verse, aphorism, of the Vedānta-sūtra. So the whole Vedic literature, in a gist form, is described in the Bhagavad-gītā. And it is being explained by the Supreme Personality of Godhead, Kṛṣṇa. So it is a very important book, spoken by God Himself. And another system of religion... Sometimes the representative of God is speaking, the servant of God speaking. They are also the same, but according to time and circumstances they are modified. But here in this Bhagavad-gītā, the Supreme Personality of Godhead, Kṛṣṇa, is speaking.