According to the laws of Physics, what we consider cold, in fact is the absence of heat. Anything is able to be studied as long as it transmits energy (heat). Absolute Zero is the total absence of heat, but cold does not exist. What we have done is create a term to describe how we feel if we don't have body heat or we are not hot."Darkness does not exist either. Darkness is in fact simply the absence of light. Light can be studied, darkness can not. Darkness cannot be broken down. A simple ray of light tears the darkness and illuminates the surface where the light beam finishes. Dark is a term that we humans have created to describe what happens when there's lack of light."Darkness does not exist either. "we see violations, crimes and violence anywhere in the world, and those things are evil. Evil is a term which man has created to describe the result of the absence of God's presence in the hearts of man."--these were Einstein words proving god's presence. 
As the absence of heat is the cold and absence of light is darkness and absence of god's presence is called Evil. These are well known facts but pointed by someone at right time clicks. It is our faith and where we put our faith that thing exists.Absence of faith and love is Evil where one do whatever he like without a second thought.Cheating,theft,rape or murder are result of negative thoughts are evil.