Krsna (is) instructing that there are two pathways. One is go back to home, back to Godhead, and other path is remain in this material world which is full of miseries, especially birth, death, old age and disease. Two paths. Actually, we living entities, we are not subjected to birth, death, old age and disease. We are eternal part and parcel of Krsna. Krsna is the Supreme Personality of Godhead and we are part and parcel of Him, just like father is there and he may have many children. So every child is the part and parcel of the father. Similarly, Krsna, the Supreme Lord, God, we all living entities, we are sons, or part and parcel of God. Qualitatively we are one. Just like a small particle of gold is also gold. It is not a different thing. But one is small particle and one is big lump. But qualitatively, both of them are gold. So we are small particle of Krsna, or the Supreme Personality of Godhead. Therefore Krsna is vibhu, the great, God is great, and we are small particle.
Lecture on Bhagavad-gita 9.3, Toronto, 20 June, 1976