The spread of liberal democracy and the integration of the world economy are the two main forces driving the world towards the end of history.
Whereof one cannot speak, thereof one must be silent.
对于那些没有研究过数学的人来说，有些事情似乎是难以置信的。
The aim of education should be to teach us rather how to think, than what to think—rather to improve our minds, so as to enable us to think for ourselves, than to load the memory with thoughts of other men.