varṇāśramācāravatā puruṣeṇa paraḥ pumān viṣṇur ārādhyate panthā nānyat tat-toṣa-kāraṇam

varnasramacaravata purusena parah puman
visnur aradhyate pantha nanyat tat-tosa-karanam
The Vedic literature recommends that a human being follow the principles of varnasrama-dharma. Accepting the process of varnasrama-dharma will make a person's life successful because this will connect him with the Supreme Personality of Godhead, who is the goal of human life. Therefore the Krsna consciousness movement is meant for all of humanity. Although human society has different sections or subdivisions, all human beings belong to one species, and therefore we accept that they all have the ability to understand their constitutional position in connection with the Supreme Personality of Godhead, Visnu. Sri Caitanya Mahaprabhu confirms, jivera 'svarupa' haya-krsnera nitya-dasa: "Every living entity is an eternal part, an eternal servant, of the Supreme Personality of Godhead." Every living entity who attains the human form of life can understand the importance of his position and thus become eligible to become a devotee of Lord Krsna. We take it for granted, therefore, that all humanity should be educated in Krsna consciousness. Indeed, in all parts of the world, in every country where we preach the saṅkirtana movement, we find that people very easily accept the Hare Krsna maha-mantra without hesitation. The visible effect of this chanting is that the members of the Hare Krsna movement, regardless of their backgrounds, all give up the four principles of sinful life and come to an elevated standard of devotion.
Although posing as great scholars, ascetics, householders and svamis, the so-called followers of the Hindu religion are all useless, dried-up branches of the Vedic religion. They are impotent; they cannot do anything to spread the Vedic culture for the benefit of human society. The essence of the Vedic culture is the message of Sri Caitanya Mahaprabhu. Lord Caitanya instructed:
One should simply instruct everyone he meets regarding the principles of krsna-katha, as expressed in Bhagavad-gita As It Is and Srimad-Bhagavatam. One who has no interest in krsna-katha or the cult of Sri Caitanya Mahaprabhu is like dry, useless wood with no living force. The ISKCON branch, being directly watered by Sri Caitanya Mahaprabhu, is becoming undoubtedly successful, whereas the disconnected branches of the so-called Hindu religion that are envious of ISKCON are drying up and dying.