Question: Will you please explain how it is that the soul evolves only on the planet Earth?
Sri Chinmoy: The soul manifests only on this planet because this planet is in evolution. Evolution means constant progress, constant achievement. When one wants to make progress, when one wants to go beyond, then this is the place. In other worlds, beings are satisfied with what they already have achieved. They do not want to go one inch beyond their achievement. But here on earth you are not satisfied, I am not satisfied — nobody is satisfied with what they have achieved. Dissatisfaction does not mean that we are angry with somebody or angry with the world. No! Dissatisfaction means that we have constant aspiration to go beyond and beyond. If we have only an iota of light, then we want to have more light. Always we want to expand.This planet has that inner urge. On the one hand, it is obscure, it is ignorant, it does not care for divine life. But, on the other hand, it has that tremendous inner urge of which most human beings are not yet aware. When the inner urge is functioning, then there is no end to our possibilities, no end to our achievements. And when we achieve the Infinite, then naturally we surpass the achievements of other worlds.
Sri Chinmoy, Beyond Within — A collection of writings 1964-1974, Agni Press, 1975