Mathematics is not a spectator sport.
The past is a foreign country; they do things differently there.
"Literature has the power to cross borders, to connect souls separated by geography and time."
真相很少纯粹,也绝不简单。
Never compromise on quality; it's the foundation of trust with your customers.
出自《论语·子罕》。年轻人是值得敬畏的啊,你怎么知道他之后不如当今的你呢?