The author reviews "Physical Geometry," a unified theory which proposes a solution to existing difficulties in Physics in line with Einstein's ideas. The fundamental problems in Physics are the following: 1-The Standard Model of Particle Physics, based on the electromagnetic, weak and strong nuclear interactions, appears incomplete and requires a complicated structure in terms of a very large number of empirical parameters. 2-Superstring Theory represents particles by strings or n-surfaces in spaces with high number of dimensions and has not produced verifiable experimental results. These...