The most precise definition I can give you of energy. Energy is the "concept" of cup. It's the thought itself, it's the essence of the cup, therefore energy is the cup. It's also the memory of that cup. Because the cup is energy, the cup cannot exist without energy to imagine/organize/observe/interpret the form into existence. Then when you look at it, you can analyze it and think "I know what this arrangment of particles is, it's a cup!" and that triggers a re-arrangement of your neurons, which rearranges your electrons and atoms and so on, so that the existence of the cup changes you. At the same time, the existence of you changes the cup, so because you observe it, the nature of it's existence changes as well. It's something like the universes imagination.