When it is detached or someway or other diseased, "Oh, I am feeling pain. I am not well." That is the diseased condition. So any person, any living entity who is not engaged in Kṛṣṇa consciousness activities, he's detached. So one has to (be) reestablished. That is Kṛṣṇa consciousness movement.
That is also explained in Śrīmad-Bhāgavatam. Muktir hitvā anyathā rūpaṁ sva-rūpeṇa vyavasthitiḥ (SB 2.10.6). Mukti means liberation. What is the liberation? Liberation means, Bhāgavata explains, hitvā anyathā rūpam. Anyathā rūpam means a different identification. When one gives up the different identification and is established in his own real identity, that is called mukti. So now our identification is that "I am matter; therefore I am this body; therefore I belong to this country; therefore I am American; therefore I am this, I am that, I am that." You see? This is our diseased condition.
So mukti means one has to be released from this wrong identification. And after giving up wrong identification, what is my real identification? Oh, I am . . . ahaṁ brahmāsmi, I am the part and parcel of the Supreme. That's it. So if anyone is reestablished in his original, constitutional position as part and parcel of the Supreme and engages his energy in that way, he is liberated. This is the definition of liberation.