If we employ a philosophic way of deductive thinking, then maybe it is right to say that behind every phenomenon there exists another phenomenon.如果用哲学推论的思维法，也许这样说也是对的，即每个现象的背后都存在着另一种现象。
This book is devoted to the construction of a deductive theory of the electron, starting from first principles and using a simple mathematical tool, geometric analysis.这本书献身于一个电子的演绎的理论的建设，从第一个原则开始并且使用一件简单的数学工具，几何学分析。
What's more, it is hard for educational theories to be totally built upon deductive grounds.Thus, the axiom methodology is bound to have its limitations.教育理论难以完全建立在演绎的基础上，因而公理方法必有其局限性。
