Matter
Matter is material, matter is immaterial, matter is memory, matter is mineral, matter is chemical. Matter matters, and matters not. It can be transformed by alchemists, used to capture images, used to split, divide, reflect, refract, double, or multiply light and energy. It has material value as silver, gold, Iceland Spar, quartz, gunpowder, and so on. Matter may be transformed, according to the rules of transformation applied to it. Whether conversion of matter into non-matter, energy, light, (or time?), results in good or bad depends on the nature of the force applied to it (creating or destroying forces).