Current stellar astronomy maintains-a close relationship between the observed structure of stars and their supposed evolutionary history. An attempt is made to distinguish between stellar structure observations and theoretical stellar evolution. The physical laws believed to govern the macroscopic structure of nondegenerate stars are reviewed. From these laws, scaling relationships between several properties are derived. These scaling relationships hold independent of the source of stellar power, allowing for both gravitational contraction and thermonuclear fusion sources. With additional observational information and physical approximation, a synthetic Hertzsprung-Russell (H-R) diagram is presented. The synthetic H-R diagram bears some similarity to observed H-R diagrams.