计算复杂性的美在于它能够揭示问题的固有难度,而不管用于解决这些问题的具体算法是什么。
The best way to learn mathematics is to do mathematics.
如果周围的人都失去理智并归咎于你,而你能保持冷静……
A city’s greatness is measured by its public spaces.
"Never stop learning. The world is always changing, and you must change with it."