King Pariksit continued: "The ability to talk can be perfected only by describing the transcendental qualities of the Lord. The ability to work with one's hands can be successful only when one engages himself in the service of the Lord with those hands. Similarly, one's mind can be peaceful only when one simply thinks of Krsna in full Krsna consciousness. This does not mean that one has to have very great thinking power: one has to understand simply that Krsna, the Absolute Truth, is all-pervasive by His localized aspect of Paramatma. If one can simply think that Krsna, as Paramatma, is everywhere, even within the atom, then one can perfect the thinking, feeling and willing functions of his mind. The perfect devotee does not see the material world as it appears to material eyes, for he sees everywhere the presence of his worshipable Lord in His Paramatma feature."

Maharaja Pariksit continued by saying that the function of the ear can be perfected simply by engagement in hearing the transcendental activities of the Lord, and the function of the head can be fully utilized when the head is engaged in bowing down before the Lord and His representative. That the Lord is represented in everyone's heart is a fact, and therefore the highly advanced devotee offers his respects to every living entity, considering that the body is the temple of the Lord. But it is not possible for all men to come to that stage of life immediately, because that stage is for the first-class devotee. The second-class devotee can consider the Vaisnavas, or the devotees of the Lord, to be representatives of Krsna, and the devotee who is just beginning, the neophyte or third-class devotee, can bow his head before the Deity in the temple and before the spiritual master, who is the direct manifestation of the Supreme Personality of Godhead. Therefore, in the neophyte stage, in the intermediate stage or in the fully advanced, perfected stage, one can make the function of the head perfect by bowing down before the Lord or His representative. Similarly, one can perfect the function of the eyes by seeing the Lord and His representative. In this way, everyone can elevate the functions of the different parts of his body to the highest perfectional stage simply by engaging them in the service of the Lord or His representative. If one is able to do nothing more, he can simply bow down before the Lord and His representative and drink the caranamrta, the water which has washed the lotus feet of the Lord or His devotee.

From Srila Prabhupada's Krsna Book ch. 80: The Meeting of Lord Krsna with Sudama Brahmana