做音乐不是为了取悦别人，而是为了表达自己。
Making music is not about pleasing others, but about expressing yourself.
The duty of the Government is to leave commerce to its own capital and credit as well as all other branches of business.
NP完全性不仅仅是一个理论上的好奇心；它对实际计算有着深远的影响。
学习算法的设计应同时受到理论见解和实践考虑的指导。