Swami Vivekananda’s views,
Good and evil are inextricably combined, and one cannot be had without the other. The sum total of energy in this universe is like a lake, every wave inevitably leads to a corresponding depression. The sum total is absolutely the same; so to make one man happy is to make another unhappy. External happiness is material and the supply is fixed; so that not one grain can be had by one person without taking from another. Only bliss beyond the material world can be had without loss to any. Material happiness is but a transformation of material sorrow.