穷人的真正悲剧是他们除了自我否定外什么都负担不起。
The real tragedy of the poor is that they can afford nothing but self-denial.
"We are all in the gutter, but some of us are looking at the stars."
Every problem in NP can be reduced to the satisfiability problem, which is the cornerstone of computational complexity theory.
法律体系的存在以承认规则的存在为前提。
中国学校的早自习