In 1902, a professor asked his student whether it was God who created everything that exists in the universe. Student replied: Yes, He again asked: what about evil? Has God created evil also? The student got silent. Then the student requested that may he ask a question for him? Professor allowed him to do so. He asked: Does cold exist, professor said: yes, don’t u feel the cold dear. Student said: I’m sorry but your wrong sir. Cold is a complete absence of heat. There is no cold, it is only an absence of heat. Student asked again: Does darkness exist? Professor said: yes, Student replied: your again wrong sir. There is no such thing like darkness. It is actually the absence of light. Sir! We always study light and heat, but not cold and darkness. “Similarly, the evil does not exist actually it is the absence of love, faith and true belief in God.” That student was Vivekananda.