历史对于整个人类，就像记忆对于我们每个人一样，它说明我们现在做的是什么，为什么我们这样做，以及我们过去是怎样做的。因此谁要想了解世界，就必须知道它的历史。(For the whole human race, history is just as important as memory for each of us. It shows what we are doing, why we do it in this way and how we did it in the past. So whoever wants to know the world must know its history.)