罗斯科.庞德在其《法律史解释》中,运用方法为我们解释了法律,并提出了“社会工程学解释”的知识增量。通过对其知识增量的解读,可以发现并不存在一种永恒不变的法律去应对和解释不断变化中的社会。任何一时期的法律都有其存在的合理性和消亡的必然性,法律也正是在这种不断的流动中得到永恒的生命。 In his Interpretation of Legal History, Roscoe Pound interpreted the law for us and put forward the incremental knowledge of social engineering explanation. By reading the increment of knowledge, one can find that there is no eternal law to deal with and explain the ever-changing society. The law of any period has its own rationality and the inevitability of extinction, and it is in this continuous flow of law that the eternal life is obtained.