A Contrasting Mind Transitions Indifference
The mind interprets and filters everything, otherwise you would not experience anything. There is a treasure box of anger, hatred and jealousy which lead to wonderful contracted states that allow expansion in love and happiness. You get to choose it all. You can choose to be led through these states or choose to be the leader in these states. You are always doing both regardless because you invite the contrast between them at all times. As long as there is a Universe there will be contrast and so indifference is merely a perspective on a specific bias because if not for bias, there likely would be no Universe as we know it, and so while indifference is a fascinating topic in metaphysics, it is also very subjective since concern and interest vary tremendously among the human species due the the functional mind which interprets all thoughts, feelings, and emotional states stemming from our field of consciousness.