证明是一种用于使他人相信数学陈述为真的工具。

In the quest to understand the cosmos, we must remain humble, for every answer we find leads to a multitude of new questions.

所以说百工干事，都有法规可以衡量。现在大道治理天下，其次治理大国，却没有法度来衡量，这就是还不如百工聪明了。 

解释：国家大而政绩小，国家的影响就跟它的政绩一样；国家小而政绩大，国家的地位也大。

"The true prison is not made of walls, but of silenced tongues and censored thoughts."