Lord Caitanya descended to teach all humanity that Krishna is the universal father calling all to remember their eternal relationship.Listen — Srila Prabhupada Uvaca
Śrī Caitanya-caritāmṛta, Madhya-līlā 6.254 — January 8, 1968, Los Angeles 680108CC-LOS ANGELES [43:57 Minutes] Prabhupāda: ...nija-bhakti-yogaśikṣārtham ekaḥ puruṣaḥ purāṇaḥ śrī-kṛṣṇa-caitanya-śarīra-dhārī kṛpāmbudhir yas tam ahaṁ prapadye [Cc. Madhya 6.254] [”Let me take shelter of the Supreme Personality of Godhead, Śrī Kṛṣṇa, who has descended in the form of Lord Caitanya Mahāprabhu to teach us real knowledge, His devotional service and detachment from whatever does not foster Kṛṣṇa consciousness. He has descended because He is an ocean of transcendental mercy. Let me surrender unto His lotus feet.] [break] This is a prayer offering to Lord Caitanya.
The central figure, dancing, a boy about eighteen years old, He introduced this movement, saṅkīrtana movement, being compassionate with the fallen souls of this age. He recommended..., He recommended from the authorized scriptures, not that He manufactured. Nowadays it has become a fashion to manufacture a certain type or system of religious or yoga principle. Caitanya Mahāprabhu did not do that. What He introduced, that is recommended in the scriptures, that "In this age, for spiritual realization, one may simply chant the holy name of Kṛṣṇa." "Kṛṣṇa" means God.
If you have got any other name for God, you can chant that also. It is not that you have to chant "Kṛṣṇa." But "Kṛṣṇa" means God. The word meaning of Kṛṣṇa means "all-attractive." Kṛṣṇa, from His beauty, all-attractive. From His strength, He's all-attractive.
From His philosophy, He's all-attractive. From His renunciation, He's all-attractive. From His fame, He's all-attractive. Five thousand years before, Kṛṣṇa spoke this Bhagavad-gītā; still going strong.
He is so famous. And Kṛṣṇa claims that sarva-yoniṣu kaunteya [Bg. 14.4]. [It should be understood that all species of life, O son of Kuntī, are made possible by birth in this material nature, and that I am the seed-giving father.] Most of you must have read Bhagavad-gītā, and in the Fourteenth Chapter you'll find that Kṛṣṇa says, "My dear Arjuna, in all species of life there may be as many varieties of forms." We are all living entity. Here even, even in human society, we have got different types of form. Nobody will be exactly like the form of other gentleman. There is difference.
So this is the beauty of creation. If you go to a tree, there are millions and billions of leaves, and you won't find one leaf exactly like the other. So there are varieties of living entities. Out of the varieties of the living entities, the human kind living entities are very small. From śāstra, from scripture, we understand that there are 8,400,000 species of life—8,400,000 species of life.
Out of that, aquatics, water animals or water-living entities, are 900,000. The botanist or the physiologist, how many they have seen or how many they have experimented or how many we have seen? But from the śāstra, from the Vedic scriptures, we find that there are 900,000's of species of life in the water, and 2,000,000 species of life in the botanical department. Similarly, there are birds, there are beasts, there are four-legged animals, and at last, the human beings. The human life is considered to be the developed form of all species of life.