It's easy to perform for others, but hard to perform for yourself.
To write is to rewrite, and to rewrite is to understand.
The beauty of mathematics is that it is so simple yet so powerful.
历史数据以不同寻常的力量支持了一个结论。要成功投资，您必须成为长期投资者。
在数学中，最简单的问题往往导致最深刻的发现。
数学是模式的科学，我们研究它们以学习如何逻辑地、批判地和创造性地思考。