The only thing I know is that I don't know anything.

"To love oneself is the beginning of a lifelong romance."

如果生活不有趣，那将是悲剧的。

The modern state is characterized by its ability to concentrate and use power in a way that premodern states could not.

Medical research is a marathon, not a sprint—endurance matters more than speed.

身体是意义的主要场所。

证明的严谨性将数学与所有其他科学区分开来。