Bhagavad-gita; Chapter-04; Text-15, Purport.——By Srila Prabhupada!
450) Whether I know how much Krishna consciousness is beneficial to all classes of men! Taught by Srila Prabhupada!
———————There are two classes of men. Some of them are full of polluted material things within their hearts, and some of them are materially free. Krishna consciousness is equally beneficial for both of these persons. Those who are full of dirty things can take to the line of Krishna consciousness for a gradual cleansing process, following the regulative principles of devotional service. Those who are already cleansed of the impurities may continue to act in the same Krishna consciousness so that others may follow their exemplary activities and thereby be benefited. —————————