Devotees: "Everything that exists is a product of matter and spirit."
Prabhupāda: You do not require to repeat this. Etad yonīni, the different forms of life... Just like here we are, human being, the cows, the dogs, the ants, the trees, the plants, so many different forms of life. Every one of us, we are living being. But according to our karma we have got different bodies. Just like we have got different dresses. We are all human being, but we have got different dresses. Similarly, sarvāṇi bhūtāni, all living entities, they are all Kṛṣṇa's part and parcel, but they have refused to cooperate with Kṛṣṇa. They wanted to enjoy material life independently.
Therefore different forms of bodies are there, but Kṛṣṇa is the cause. Kṛṣṇa... Just like father. Father is the cause of the sons, but the sons may be different. Not exactly all the sons are on the equal pattern. Similarly, we are originally all part and parcel or sons of God. Therefore God's qualities are there in us, very minute quantity, because we are very small. So the quality is there. Just like drop of water from the ocean. The taste is there. The taste of the ocean, salty, is there in the drop of ocean water. There is no difference. Only the difference is quantity... In quality they one one. Quality, that salty taste, quality, that is one. Any drop of the ocean, you can take the salty taste, but the drops may be of different quantity and the ocean is very, very big. This is called acintya-bhedābheda, simultaneously one and different. One in quality.
So qualitatively we are one. God is good, so in quality we are good; we are not bad. But why you have become bad? Because we are now differently dressed. Dehātma-buddhiḥ. A dog is thinking, "I am dog," and a man is thinking, "I am man." A cat is thinking, "I am cat." He is neither cat, neither dog, neither human being. He is part and parcel of God. Ahaṁ brahmāsmi. This is self-realization, "I am not this body." Just like we are differently dressed. So I am not the dress. I am human being; you are human being. Paṇḍitāḥ sama-darśinaḥ (BG 5.18). Therefore, those who are learned scholar, they do not find any difference between cat and a brāhmaṇa because the brāhmaṇa is also a living entity and the cat is also a living entity, differently dressed.
So we have to rectify this mistake, that we are not this body. This is our external covering. We are spirit soul, part and parcel of Kṛṣṇa. And that is the stage of liberation. Svarūpeṇa vyavasthitiḥ (SB 2.10.6). Now we are acting according to the covering. When we shall not act according to the covering but according to our constitutional position, that is liberated platform. Kṛṣṇa consciousness means when we understand that "We are part and parcel of Kṛṣṇa. Therefore our duty is to serve Kṛṣṇa," this is self-realization, this is liberation. When we are fully convinced about this fact that "We are all part and parcel of Kṛṣṇa. Our only duty is to serve Kṛṣṇa," then you are liberated. So the bhakti science means to purify. Ceto-darpaṇa-mārjanam (CC Antya 20.12). We are differently conscious. Somebody thinking, "I am American," somebody, "I am Indian." This is not our identification. The identification, when I shall think, as Caitanya Mahāprabhu gives us information, jīvera svarūpa haya nitya-kṛṣṇa-dāsa (Cc. Madhya 20.108-109), that is self-realization.