Anyone who truly desires liberation abandons the worship of celestial beings and, free from all envy towards them, concentrates his thoughts on Narayana, God, the Supreme Person. Then, when such a person meets a pure devotee, he adopts Krishna's devotional service and renounces his plan for liberation. It is written in the Hari-bhakti-sudhodaya (sacred book):
O magnanimous soul, despite the many flaws inherent in this miserable existence, there is a glorious thing, namely the company of pure devotees. So seek their presence, which has the effect of quenching the thirst for liberation.
In the human being, fear arises from a material conception of existence and from forgetting his eternal relationship with the Supreme Lord. Under the influence of material energy, he no longer has anything but distorted memories. Thus anyone with sufficient intelligence will fully engage in devotional service, holding the Supreme Lord as his spiritual guide and the object of his worship. In conclusion, no one can revolutionize their life without embracing the service of the Lord. And it is only when one is effectively cleansed of all material filth that one can fully devote oneself to Krishna consciousness. He or she who practices devotional service in order to grasp reality as it is, but without the slightest intention of penetrating Krishna consciousness, will reap only sorrows and miseries, and his or her life will remain devoid of substance. Every living being is an integral part of the Supreme Lord and must therefore serve him, the Absolute All. Deprived of this service, the being can only sink into material mire.
Lord Chaitanya concludes by saying that the six classes of spiritualists embrace Krishna's devotional service in one form or another. In other words, over time all spiritualists come to grasp the need to serve Krishna with devotion and to become fully aware of Him. However, anyone can embrace the Lord's devotional service, whether they are very learned or very eccentric.
The six classes of spiritualists are: the neophyte, the confirmed spiritualist, the one who is already established in transcendence, the one who aspires to liberation, the one who is already liberated, and the one who acts in harmony with his intrinsic nature. All are qualified as spiritualists. Now, when one becomes a spiritualist, a great thinker under the sign of Krishna consciousness, one engages fully in devotional service. If we stick to the grammatical rules, there are different types of spiritualists, but the word spiritualist is in itself sufficient to encompass them all, and in the collective sense all spiritualists are prone to worship Krishna, the Supreme Lord. The transcendentalist, the holy being, who adores the Supreme Soul present in him also bears the name of spiritualist, and spiritualists themselves divide into two classes, respectively called sagarbha and nigarbha. Some transcendentalists meditate in their hearts on the localized aspect of Visnu, whose four hands bear four symbols: the conch, the disc, the mace and the lotus. The spiritualist who meditates on the four-armed form of Visnu becomes absorbed in devotional ecstasy and manifests the signs associated with this state of soul, sometimes weeping, sometimes feeling separation from the Lord. So he bathes in transcendent bliss and becomes captive, like a fish in a net.