Matter is infinitely small

[Nightstar]

hrmm lets see....according to string theory, strings cannot be broken down forever. you can break them down for a long time, but eventually quantum effects stop you from cutting them further.
a quote from Scientific American- "In addition to traveling as a unit or vibrationg along its length, a subatomic string can wind up like a spring. Suppose that space has a cylindrical shape. If the circumference is larger than the minimum allowed string length, each increase in the travel speed requires a small increment in energy, whereas each extra winding requires a large one. But if the circumfereance is smaller than the minimum length, an extra winding is less costly than an extra bit of velocity. The net energy-which is all that really matters-is the same for both small and large circumferances. In effect, the string does not shrink.This property prevents matter from reaching an infinite density." and an infinitly small size. Essencially what they are saying, is that a small string is lighter than a large one, but if you try to squeeze the small one smaller than it can get, it gets heavy again.

what you have to understand about strings, is that they are more like the energy defining the quark, or electron, than a particle of matter themselves. the resonate in 8 dimensions, and that energy is displayed as the trapped particles in our 3 dimensions