The Vedic instruction is so nice that the soul, when he jumps over this material ocean, the Vedic instruction teaches him how to swim and come back again to the shore. This swimming process, according to Vedic instruction, is called sacrifice, charity and penance. One who learns these techniques of swimming over the ocean of nescience, he goes back to home, back to Godhead. One who does not take to this swimming process, he becomes drowned. In the Bhagavad-gita this is stated iccha dyesa samutthena... svarge yanti parantapa which means deluded by desire to enjoy the material world and becoming envious of Krishna, one comes to this material world. (Bhagavad-gita 7.27). So read our literature profusely and you will get sufficient knowledge.
Letter to Upendra, 9 October, 1971