The 10-Minute Universe: A Primer

There is matter and there is energy. Matter is anything that has mass. Energy is everything else. At the square of the speed of light, mass and energy are equivalent, indistinguishable. Mass becomes energy, time ceases to exist. To accelerate at/from the speed of light, one must shed all mass. My ultimate fantasy is to become weightless, to become invisible, to become as much a part of her as she is of me.