Srila Prabhupada - "First of all try to understand yourself." (Delhi, Nov 10, 1971)

Srila Prabhupada - "Actually Kṛṣṇa comes here in His original form in one day of Brahmā. These are very long, long narration, but first of all try to understand yourself. What is your nature? What is your purpose? What are you here for? By understanding this you will understand God automatically. 

If you are so advanced that you can understand God, then you can understand your nature also. Qualitatively we are one. Quantitatively we are different. Quantity, God's (Krsna) quantity, God's power, God's opulence, God's riches, God's beauty, God's wisdom, they are very, very, very, greater than ours, that is the difference between God (Visnu-tattva) and us (jiva-tattva or jiva-soul) 

Now try to understand your constitutional position, don't think that after this body is finished, or we meet death, everything is finished, no it isn't finished because there is no death for the jiva-souls. This great mistake is going on, they do not know what happens after death. There is no education. There is no department of knowledge in the universities, what is going to happen after death." (Lecture BG, Ch 4 Text 1, Delhi, Nov 10, 1971)