So the quality is the same, but the quantity is different. So because the quality's same, so we have got all the propensities as God has, as Kṛṣṇa has. Kṛṣṇa has got loving propensities with His pleasure potency, Śrīmatī Rādhārāṇī. Similarly, because we are part and parcel of Kṛṣṇa, we have also got this loving propensity. So this is svabhava. But when we come in contact with this material nature... Kṛṣṇa does not come into the contact of the material nature. Therefore, Kṛṣṇa's name is Acyuta. He never falls down. But we are prone to fall down, to be under the... Prakṛteḥ kriyamāṇāni. We are now under the influence of prakṛti. Prakṛteḥ kriyamāṇāni guṇaiḥ karmāṇi sarvaśaḥ (BG 3.27). As soon as we fall down under the clutches of this prakṛti, material nature, which means... Prakṛti's composed of three qualities, goodness, passion and ignorance. So we capture one of the qualities. That is the cause, kāraṇaṁ guṇa-sanga (BG 13.22). Guṇa-saṅga. Means associating with different quality. Guna-saṅga asya jīvasya, of the living entity. That is the cause. One can ask: "If the living entity is as good as God, why one living entity has become dog, and one living entity has become god, demigod, Brahmā?" Now the answer is kāraṇam. The reason is guṇa-saṅga asya. Asya jīvasya guṇa-saṅga. Because he's associating with a particular guṇa. Sattva-guṇa, rajo-guṇa, tamo-guṇa.
So these things are described very vividly in Upaniṣad, how guṇa-sanga acts. Just like a fire. There are sparks. The sometimes the sparks fall down from the fire. Now there are three conditions of the fire spark falling down. If the spark falls down on dry grass, then it can immediately ignite the grass, the dry grass. If the spark falls down on ordinary grass, then it burns for some time, then again it becomes extinguished. But if the spark falls down on the water, immediately extinguished, the fiery quality. So those who are captured by the sattva-guṇa, sattva-guṇa, they are intelligent. They have got knowledge. Just like brāhmaṇa. And those who are captured by the rajo-guṇa, they are busy in material activities. And those who have captured tamo-guṇa, they are lazy and sleepy. That's all. These are the symptoms. Tamo-guṇa means they're very lazy and sleepy. Rajo-guṇa means very active, but active like monkey. Just like monkey's very active, but they're all dangerous. You'll never see inactive. Whenever it will sit down, it will make gat gat gat gat.