The past is not dead. It is not even past.

数学的研究是所有智力和精神进步不可或缺的基础。

The great struggle of the twentieth century was between liberalism and totalitarianism.

我不觉得有义务相信，那位赋予我们感官、理性和智力的上帝，会希望我们放弃使用它们。