The real challenge is not in solving the equations, but in understanding what the solutions mean.

"The truth is rarely pure and never simple."

衡量银行成功的真正标准不仅是利润，还有对社会的积极影响。

教育不仅仅是建造学校，而是确保孩子们真正学到知识。

每一个边界都意味着维持它的暴力。

The first duty of the sovereign， that of protecting the society from the violence and invasion of other independent societies， can be performed only by means of a military force.