In the year 1881, a professor asked his students whether it was God who created everything that exists in the Universe?

One student replied  " YES "

The professor asked " What about Evil ? Has God created evil also?"

The student got silent........
Then the student requested that may he ask a question ?

The professor allowed him to ask.
The student asked  " Does COLD exist ?

Professor replied " Yes. Dont you feel the cold dear ?"

Student said : I am sorry You are again wrong sir.     COLD is a complete absence of heat ......
There is no Cold. It is only an absence of HEAT.
The student asked " Does darkness exist? "

The professor replied firmly " Yes"

Student replied  " You are again wrong sir. There is no such thing like darkness. It is actually 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 and true belief in God."

The entire class students got up and applauded the student.

That intelligent student was Swamy Vivekananda.