There is no point treating a depressed person as though she were just feeling sad, saying, 'There now, hang on, you'll get over it.' Sadness is more or less like a head cold- with patience, it passes. Depression is like cancer.
The concept of polynomial-time reduction is central to understanding the structure of NP-complete problems.
合作共赢是新时代的发展理念，要构建开放共享的产业生态。
解释：齐国是强国，利用它的强大进攻宋国，让他逞强，燕国就可以乘机打败齐国；齐国是大国，利用它的大国野心吞并宋国，增加土地，燕国就可以乘机进攻。
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
"Theoretical computer science is a field where deep mathematical insights lead to practical computational tools."
Leadership is not about being in charge; it's about taking care of those in your charge.
The multiverse is not a theory, but a prediction of certain theories.