Geometric Generalization of the Structure of Nature is a conceptual theory, which generates Relativity and Quantum Mechanics. A concrete re-definition and formulation of mass and time, mechanism of gravity at particle scale, the cause of universal expansion at particle scale, formation principles of fundamental particles are presented. Derivation of Lorentz Transformation Equations from Geometric Generalization, a few verifiable predictions are also included. Geometric generalization simplifies the full description of nature, as strings' extension towards time dimension by the Universal expansion at particle scale. Please take some of your valuable time to review, I believe you will enjoy and be surprised by the simplicity. Serious comments are appreciated. Erk Durgun Geometric Generalization of the Structure of Nature: http://www.morfarch.com/gsn.html or http://www.geocities.com/erkdurgun/gsn.html