If you understand Krsna, then you can teach even the greatest scientist, the greatest philosopher, greatest politician — everyone. That is Krsna [indistinct]. You don't require to be a great scientist to teach a scientist; but if you simply understand Krsna, then you will be able to teach even the greatest scientist. The greatest philosophers, greatest anyone, let them come; we shall teach. We shall become their teacher. We challenge. Why? Because we know a little about Krsna.

From Srila Prabhupada's lecture on Srimad-Bhagavatam 1.2.17 — July 18, 1974, New Vrindaban