跳舞着的流水呀，在你途中的泥沙，要求你的歌声，你的流动呢。你肯挟跛足的泥沙而俱下么？

The great philosophers are those who have made a difference in the way we think about the world and our place in it.

The tyranny of a prince in an oligarchy is not so dangerous to the public welfare as the apathy of a citizen in a democracy.

自然界的法则是智慧的根本。