The year was 1902, when a professor asked his student whether it was God who created everything that exist in universe? Student replied: Yes! Professor asked again and what about evil, Has God created evil also? This time the student got silent.
Than the student in turn asked the professor: Does cold exist? Professor replied Yes, don’t you feel the cold? Student responded You are wrong sir Cold is a complete absence of heat. Similar for darkness – there is no such thing like darkness it is actually the absence of light.
We have always studied light and heat but not Cold and Darkness, the Evil does not exist. Actually it is absence of Love, faith and true believe in God.