I've learned that you can't control everything, but you can control how you react to it.
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。
【释义】:人在幼年时精神专注,成年后心思分散,教育要趁早,别错过时机。  
Sustainability isn’t a trend; it’s our responsibility to the next generation.