Swami Vivekananda was a miseries of the world cannot be cured by physical help only . if mans nature does not changes , his physical needs will always arises and miseries . the only solution of the problems is to make mankind pure ignorance is the mother of evil and all the misery in the world man must become pure, spiritually strong and educated then only the misery in the world will case though we convert every house in the country into a charitable asulum and fill ghe land with hospitals, human misery will continue So, frist of all mans character must change.
Bhagavad-Geeta again and again says that we must all work continually.