So there is very good potency if we simply chant this Hare Kṛṣṇa mantra. The potency is, the first benefit is, that our dirty heart becomes cleansed. We have accumulated many dirty things within the heart on account of bad association. The first dirty thing is to accept this body as self. This conception, bodily concept of life, is existing amongst the animals. It is existing amongst the animals that "I am this body." So actually, I am not this body; I am spirit soul. I am embodied within this body, material body. This is the fact. If we simply become aware of this fact, that "I am not this body; I am spirit soul. I am living within this body," then immediately we become liberated from this material world simply by this understanding. And this can be understood by any sane man without any study of philosophy, simply by common sense.
The simple philosophy is that the child is now possessing a small body, then he will possess a big body, then another big body. In this way the child is there, the body is changing, that's a fact. And the body changes so long the soul is there. Therefore, the conclusion should be the body and the soul, they are different. It is very simple truth, but because we have accumulated so much garbage dirty things within our heart, we cannot understand even this simple thing. We are advancing education in civilization and so many big, big words, but we are so dull that we cannot understand this simple thing. And to understand this simple thing is the beginning of life. Otherwise, without understanding this simple thing, to exist is just like the cats and dogs. The cats and dogs, they have no such thing as nationalism, this ism, that ism. They simply eat, sleep, have sex and defend.