In 1882 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 you feel the cold dear?
Student said: I'm sorry but you are 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: you are again wrong sir. There is no such thing like darkness. Its actually the absence of light.
Sir! We always study light & heat, but not cold & darkness.
Similarly, the evil does not exist. Actually it is the absence of love, faith & true belief in God.
That student was... Vivekananda...!!!