变化是唯一不变的，而适应能力是蓬勃发展的关键。
Change is the only constant, and adaptability is the key to thriving.
代数分析很快让我们忘记了研究的主要对象，因为它将我们的注意力集中在抽象的组合上，直到最后我们才回到最初的目标。
【释义】君子爱护人，是凭借德行来要求他；见识浅薄的人爱护人，则是靠无原则的迁就。
You don't need to be perfect to inspire others. Let people get inspired by how you deal with your imperfections.
Perhaps as important is the relation between the existence of solutions to a competitive equilibrium and the problems of normative or welfare economics.
