This human form of life is a chance for God realization. Without God realization, our life is frustrated. We, being part and parcel of God, it is our duty to understand our relationship with God and act accordingly, and then our goal of life is achieved. The ultimate goal of life is to attain eternal life, full of knowledge and bliss, sac-cid-ānanda vigraha (Bs. 5.1). Sat means eternal, ānanda means bliss and cit means knowledge.
This body is just the opposite. It is not sat. This body is temporary. It is not eternal. This body is full of ignorance. There is practically no knowledge. We do not know, after closing our eyes, we do not know what is happening before our eyes. So our knowledge is always imperfect. And this life is also miserable. It is not at all blissful.
Every step, there are three kinds of miserable condition: ādhyātmika, adhibautika, adhidaivika. Ādhyātmika means miseries pertaining to the body and the mind. Adhibautika means miserable condition offered by other living entities. And adhidaivika, natural disturbances. So either of these three, or at least one or two, there must be always present. This is the material condition of life. But as spirit soul, we are sac-cid-ānanda vigraha, part and parcel of sac-cid-ānanda vigraha. Sat means eternal, cit means knowledge and bliss, and ānanda means blissfulness.
So if we want to have eternal life, full of knowledge and blissfulness, then we must take to Kṛṣṇa consciousness. Our this Kṛṣṇa consciousness movement is the greatest welfare activities in the human society. We are giving information to every man, without any discrimination of cast, creed and color, that every human being especially . . . not only human being; all living entities, including the animals, beasts, birds, trees, aquatics—everyone—they can achieve to the highest perfection of life by this Kṛṣṇa consciousness. But especially the extra intelligence of the human being can be utilized to realize Kṛṣṇa. If we don't do that, we are missing a great opportunity.
So our request to everyone is to understand this philosophy of Kṛṣṇa consciousness. If anyone wants to understand this philosophy through philosophical angle of vision or scientific angle of vision, we have got immense volumes of books. You can read and try to understand what is this great movement, Kṛṣṇa consciousness. But you can also, without reading books, without taking any trouble, if you simply agree to chant this mahā-mantra, Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare/ Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare, you get the same result. Even a child can join.
Actually we have experienced that a child, a dog, an animal, everyone takes part in this movement. During the Lord Caitanya's movement, when He passed through a great forest known as Jharikhaṇḍa—Central India there is a great forest—along with Him, the tigers, the elephants, the deers, everyone danced and chanted Hare Kṛṣṇa mantra. It is so nice, and it is so spiritual, the very vibration will immediately enthuse your ecstasy in spiritual consciousness.