虽然推动历史发展的是各种因素的合力，但有时，特定人物对于历史的走向在某种意义上起了决定性的作用，影响了历史的进程，或兴了一个国家，或亡了一个王朝；或推进了历史的进程，或延迟了历史的脚步。(The combination of various factors promotes the development of history, but sometimes, certain people in some sense play a decisive role in the development trend of history and have an impact on the course of human history. They may make a country prosperous and strong or they pushed a dynasty to the edge of extinction; they may promote the course of human history or they may delay the footsteps of history.)