“There are various grades of men, and out of many thousands one may be sufficiently interested in transcendental realization to try to know what is the self, what is the body, and what is the Absolute Truth. Generally mankind is simply engaged in the animal propensities, namely eating, sleeping, defending and mating, and hardly anyone is interested in transcendental knowledge.” (Shrila Prabhupada, Bhagavad-gita, 7.3 Purport)