逻辑学研究不仅仅是关于正确推理，而是关于思想的解放。

Freedom is never voluntarily given by the oppressor； it must be demanded by the oppressed.

The only thing I'm scared of is being forgotten.

To understand oneself is to understand the world.

个人的就是政治的，政治的也是个人的。

没有方法能使时钟为我敲已过去了的钟点。