数学、物理学与形而上学原则是研究莱布尼茨实体学说的三种理论视角与思维层级。莱布尼茨承认数学意义的广延、必然性分析有其合理意义,但认为单纯的广延是不实在的复合物;他承认笛卡尔、牛顿物理学意义的绝对运动及运动量守恒有助于解释机械论,但认为运动是不实在的,是力的派生状态。他承认古希腊、经院哲学的形式对于终极因的意义,但形式不能用于解释具体的运动。数学、物理学与形而上学原则统一于莱布尼茨神秘理性主义之中。 The principles of mathematics, physics and metaphysics are three theoretical perspectives and thinking levels for studying Leibniz’s substantive theory. Leibniz admits that the extension of mathematical meaning, the analysis of necessity has its reasonable meanings, but thinks that the mere extension is an impractical complex. He concedes that the absolute motion and conservation of motion in Descartes and Newton’s physics help to explain Mechanical theory, but that the movement is not real, is the state of power derived. He acknowledged the significance of ancient Greek, scholastic philosophical forms for the ultimate cause, but forms can not be used to explain specific movements. The principles of mathematics, physics and metaphysics are unified in Leibniz’s mystical rationalism.