For every particle there is a corresponding symmetric particle.  Physics has a translational symmetry, which means that the laws and values of physics are the same at every location in the universe.  If an observer were to travel from one point to a much farther distant point the observer we see no change in the physics.  A broken symmetry introduces change—a non-absolute uniformity.  The breaking of symmetries creates complexity in the laws of nature in the outcome of laws.  There’s a symmetry and uniformity between the strong and weak nuclear forces, which have been unified as electromagnetism by James Clerk Maxwell.  A typical example of vital symmetry breaking is that which gives rise to the balance between matter and antimatter in the early universe.  However, there is an asymmetry between the quantum and the large (a la gravity). String theory is the attempt to unify all of physics.