A Vaisnava's first qualification that he's unhappy by seeing others unhappy. Vaisnava cannot be unhappy. That Prahlada Maharaja says, that "I have no problem. I am unhappy seeing these people who are simply engaged in false activities and they do not care for Krsna consciousness. Therefore I am unhappy." This is Vaisnava's qualification. Not that "I am saved. That's all right." That is materialism. "Let others go to hell. I am saved." That is materialism. A Vaisnava should think always, "Oh, so many people are suffering. What I am doing for them?" That is Vaisnava. Para-duhkha-duhkhi.

(Srila Prabhupada: Morning Walk — December 5, 1973, Los Angeles)