I like the energy response. A lot of things make more sense when you look at them from that perspective. Quite simply put: things move through the universe on a path of constant energy. A moving object has a certain amount of kinetic energy and will continue moving in a way that exactly preserves that energy, unless some force is applied to it.

You know how the path of light can bend in the presence of a black hole or other massive object. I’ve heard a lot of explanations for why this happens, and one is that the light follows the path of zero change in energy. Like contour lines on a map showing elevation.

Hope this helps!