The quality of an organization's vision determines the quality of its future.
That is what learning is. You suddenly understand something you've understood all your life, but in a new way.
并不存在一个自由美国和一个保守美国的区别 - 只有团结的美利坚合众国。
The beauty of mathematics lies not only in its abstract elegance but also in its profound ability to model and solve real-world problems.