That understanding is tat tvam asi. You have to understand ahaṁ brahmāsmi: "I am Brahman. I am not matter." Our disease is that I am identifying with this matter, "I am this material body," which is foreign to me. This is the beginning of Bhagavad-gītā instruction, that "You are not this body."Tat tvam asi: "You are spirit soul." So we also have to accept. We are accepting that "I am not this body; I am spirit soul." But my constitutional position is part and parcel of the supreme whole. So just like the gold mine and a small particle of gold. That small particle of gold is also gold. But that does not mean it has the same value as the gold mine. Tat tvam asi. Just like a drop of sea water. Chemical composition is the same. Salty taste is the same.
Similarly, if you can understand yourself, then you can understand even God. If you study yourself, that "Although I am very small..." What to speak of myself? Even a small ant, it has got individuality. A ant is going on. You stop it. It will struggle. That means it wants to keep its individuality. Therefore, if you are the same, then God is also individual. He is not impersonal. Immediately you can understand. How you can...? I have got so much... I am so small, tiny; still, I have got my individuality, personality, and how God can be impersonal? Even a common sense man can understand.